Trident ANT100 full course (all case and SLP)

Question # 00033427 Posted By: echo7 Updated on: 11/25/2014 11:46 PM Due on: 11/24/2014
Subject Anthropology Topic General Anthropology Tutorials:
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Module 1 - Case

STRESS AND THE NEUROENDOCRINE RESPONSE

STOP!!! Review the text and diagram on the Home page and the introductory Anatomy and Physiology tutorial before proceeding with this assignment!

Case Assignment

Now study this diagram showing how the body responds to stressful stimuli. Notice that short-term stress follows one signaling pathway that begins in the brain, travels out the spinal cord, and directly to the adrenal glands. Many organs of the body will receive direct stress response messages using this pathway as well. When the adrenal glands receive the signal from this pathway, they release a stress hormone that signals many systems in the body to prepare to either run away from the stressor (such as a predator or an oncoming vehicle, for example), or fight. The part of the nervous system that activates this response to acute stress is called the sympathetic nervous system. After the stressful stimulus has passed, the parasympathetic (nicknamed the “rest and digest” response) calms the nervous system and restores the normal function of the body systems, maintaining homeostasis.

The Sympathetic vs. Parasympathetic Nervous Systems

These two divisions of the nervous system counteract each other to allow the body to receive the resources it needs to respond to a life-threatening situation (more glucose to the brain to enhance thinking ability, more oxygen and sugars to the muscles to run, etc.), and then return to a relaxed state. As you saw in the diagram, the sympathetic response begins when a stressful situation is detected by your sensory nerves, which make up the peripheral nervous system, or PNS. The sensory nerve endings can deliver this message directly to the brain through cranial nerves, which gather the information we need to give us the senses of smell, sight, hearing, and taste. Stress stimuli can also be detected by peripheral nerve endings throughout the body and delivered to the brain via the spinal cord. The brain and the spinal cord make up the central nervous system, orCNS.

View this diagram to review the anatomy of the sympathetic and parasympathetic nervous systems.

Notice that the “rest and digest” (parasympathetic) message is delivered through cranial nervesthat originate in the brain stem, and sacral nerves that originate in the sacrum at the end of thespinal cord. The “fight or flight” (sympathetic) response originates from the spinal cord. These nerve impulses are delivered by the CNS to the effector organs responsible for reacting to the situation by either simulating the organ to take action, or calming (inhibiting) the organ to return homeostasis. In this situation, the nervous system sends a signal to the endocrine system to handle acute, or short-term stress.

When the body is faced with long-term, or chronic stress, the endocrine system predominantly responds by releasing hormones such as cortisol. You will learn more about cortisol in the next module.

Read Understanding the Stress Response in Harvard Health Publications, published by the Harvard Medical School.

From your reading address the following:

1. Define acute and chronic stress. Provide examples.

2. What region of the brain detects stress and interprets the stimulus as dangerous? What is its function, and where does it relay the signal that conveys the danger? What format is the signal in? What is the role of the region of the brain that receives the stress alert?

3. What is a hormone? What hormones are involved in the stress response? When are hormones released in the stress response?

4. What is the HPA and what role does it play in the stress response?

5. What recommendations are given to counter stress?

Assignment Expectations

Organize this assignment using subtitles that summarize each question above. For example, to answer Question 1, use the subtitle: Acute versus Chronic Stress. Answer each question under the subtitle using complete sentences that relate back to the question. Be sure to include a reference section at the end of your assignment that lists the sources that you were required to read and any additional resources you used to research your answers. Follow the format provided in the Background page.

Module 1 - SLP

STRESS AND THE NEUROENDOCRINE RESPONSE

As you work through this SLP assignment, you will learn more about the flexibility, or plasticity, of the brain. You have learned about how the spinal nerves can deliver messages directly to effector organs from the CNS through peripheral nerves that branch off of the spinal cord. These nerves are collections of neurons bundled in connective tissue. Neurons also communicate with each other within the CNS and establish circuits and neuronal pathways.

First take some time to work through these tutorials about how neurons communicate:

1. Neurons communicate with each other

2. Neurons communicate at synapses

3. Communication is delivered via the axon

4. Synapses and neurotransmitters: Be sure to click on “Presynaptic neuron,” “synaptic cleft,” and “postsynaptic neuron.”

Throughout life, the connections between neurons in the brain develop and change according to the genetic foundations that the individual inherits from the parents, and the environmental influences to which the individual must respond. For example, the abundance of one type of neuron over another, and the neurotransmitter that each produces can be predetermined by the DNA an individual inherits. However, an individual who is exposed to chronic stress during developmental years may reinforce some response pathways more than individuals who do not experience the same patterns of stress. These points are summarized and explained further in this article “Stress Management,” provided by the Mayo Clinic. Read this brief article before continuing to the requirements for this SLP.

Continue your reading on how the brain handles stress and the idea of plasticity at BrainFacts.org, a public information initiative of the Society for Neuroscience, The Kavli Foundation, and Gatsby. Read the article, “How does the brain handle long-term stress?” and follow the link to the article, “Effects of Stress on the Developing Brain” in the right-hand column of links provided on this page.
Address these questions in paragraph format to complete the SLP assignment for Module 1:

1. What is a neurotransmitter and what is its function?

2. What neurotransmitter is mentioned in the article, “How does the brain handle long-term stress?”

3. How is short-term stress described in this article?

4. Do a little independent research on the hippocampus. Where is it located in the brain? Briefly describe its function and neurogenesis. Insert a labeled picture into your assignment illustrating its location.

5. How is long-term stress differentiated from short-term stress in this article? What brain region is involved in this comparison and what is its general function? Insert a labeled picture of this region into your assignment illustrating its location in the brain.

6. After reading the article “Effects of Stress on the Developing Brain,” explain the implications of chronic stress on the brain and the rest of the body reported by the authors. What examples of chronic stressors are included?

7. What components of parental care are described as being important determinants of brain development in this article? What genetic influences are described as relevant to the ability to handle stressful environments?

SLP Assignment Expectations

Organize this assignment using subtitles related to the content for each question. Answer each question under the subtitle using complete sentences that relate back to the question. Be sure to include a references section at the end of your assignment that lists the sources that you were required to read and any additional resources you used to research your answers. Follow the format provided in the Background page.

Module 2 - Case

CHRONIC STRESS AND BEHAVIORAL RESPONSE

STOP!!! BEFORE YOU PROCEED, BE YOU MUST HAVE READ THE HOME PAGE AND VIEWED ALL LINKS AND TUTORIALS!!! You will need this information to complete this Case Assignment.

Assignment Overview

Cortisol is an important hormone that is released in the stress response. In this module assignment, we will look at this hormone more closely to investigate:

1. the molecular composition of cortisol

2. the signaling pathway that elicits the production and release of cortisol

3. the cellular-, organ-, and organ system-level response that results from this cell signal

Case Assignment

Read the following articles:

The Physiology of Stress: Cortisol and the Hypothalamic-Pituitary-Adrenal Axis. Randall, M. 2011. Dartmouth Undergraduate Journal of Science.

and

The Relationship between Traumatic Stress, PTSD and Cortisol. Delaney, E. Naval Center for Combat & Operational Stress Control.

After reading these articles, develop a 10–15 slide presentation in the following format.

Slides 1 and 2: The cascade of hormonal signals described by the section titled “Neurochemistry of Stress” of the Randall (2011) article. Use simple ovals or circles to depict the regions that release specific hormones in the hormone cascade that results in the release of cortisol. Label the hormones and regions and organs involved using textboxes (both options appear in the “Insert” tab of the PowerPoint program).

Slides 3 and 4: Label and diagram the kidney and adrenal gland. Include the following:

· Adrenal gland: cortex and medulla; regions associated with hormone production and release; hormones released in each region

· Kidney: cortex and medulla; region of water absorption and filtering; region of urine collection

Slide 5: Diagram and label the HPA axis. Include the hormones released by each component and their effect on the target organ(s).

Slide 6: Using your diagram from Slide 5, include the location of the hippocampus and the negative feedback loop that occurs when the hippocampus detects high cortisol levels. In the notes section, include a brief description of the effects associated with elevated cortisol exposure to the hippocampus.

Slide 7: Using bulleted points, list factors that exacerbate the stress response through activation of the HPA axis.

Slide 8–10: Do some additional research on PTSD. Diagram the regions of the brain believed to be involved with symptoms of PTSD. Explain the relationship between PTSD and depression and include relevant regions of the brain in your labeled regions.

Slides 11–13: In bulleted points, summarize the varied findings in the studies described in the article, “The Relationship between Traumatic Stress, PTSD and Cortisol.” Include the relationships found between cortisol levels and individuals with PTSD. In the notes include some explanations from the article for the variability in cortisol levels in these individuals. Explain the limitations of these studies mentioned by the author at the end of the article.

Slides 14 and 15: references cited, additional notes if necessary

Assignment Expectations

For this Case Assignment you will develop a PowerPoint presentation that is approximately 15 slides in length and addresses the requirements outlined above. Place the text containing the answers to the questions above in the Notes section of your slide presentation. Reference all of your answers in your Notes sections with citations, such as (Murray 2014). Your slides should contain labeled images that illustrate the text that you included in your Notes sections. Do a Google search that includes the term “image” to find diagrams of the required organs and systems (e.g., search for “adrenal gland image”). Provide the website or reference used for each labeled image. Be sure your last slide is a references slide that contains the full references cited on your slides. Many resources are provided for you. Include these in your references section. This assignment should not require much independent research.

Module 2 - SLP

CHRONIC STRESS AND BEHAVIORAL RESPONSE

Continue your investigation of the effects of stress on brain function and behavior. Read more about the hippocampus, amygdala, and prefrontal cortex in these articles:

How to Prevent Stress from Shrinking Your Brain,” in Psychology Today

Stress Effects on Structure and Function of Hippocampus,” by the Rockefeller University

Answer the following questions in paragraph format to write an essay about the findings reported by these articles:

Introduction Paragraph:

First, do some research on how theamygdala, hippocampus, and prefrontal cortex communicateand result in normal behavioral response. You will begin your reading on the amygdala by following this link. After reading this section, click onseveral other structures in the brainat the end of the page to read about the interactions between these three regions. Briefly describe this pathway and the behavior that results from the interaction of these regions using the format and requirements outlined below.

Body Paragraph 1

Summarize the effects of glucocorticoids on the hippocampus and prefrontal cortex reported in the articleHow to Prevent Stress from Shrinking Your Brain.

Body Paragraphs 2 and 3

What effect on hippocampal cells have stress hormones had in recent studies described byStress Effects on Structure and Function of Hippocampus? What effect have they had on the amygdala in studies? What are the implications of these effects? HINT: What are the functions of the regions and how might they be affected by changes in their structure?

Body Paragraph 4

What is neurogenesis and where does it occur in the brain? What effect on the regeneration of hippocampal cells is reported in this article? What is the mechanism?

Conclusion Paragraph 1

Summarize the effects of cortisol on this pathway by describing how PTSD can result from perpetuated cortisol release and how this can result in depression by activating and/or reinforcingdepression pathways.

Conclusion Paragraph 2

Describe the methods proposed to counteract the negative effects of chronic stress inHow to Prevent Stress from Shrinking Your Brain.

SLP Assignment Expectations

For this assignment, write an essay using the outline above. You are provided with many scholarly references to complete this assignment. Include a References section that lists these and any additional sources you used (refer to the Background page). For any additional research you are required to do to complete your assignment, please use scholarly references such as a peer-reviewed journal article or a government-sponsored or university-sponsored website. As you read through your sources, take notes from your sources and then write your paper in your own words, describing what you have learned from your research. Direct quotes should be limited and must be designated by quotation marks. Paraphrased ideas must give credit to the original author, for example (Murray, 2014).Direct copying from “homework help” websites will not receive credit.

Module 3

CASE 1-

Now that you know about the immune response, return to the article The Physiology of Stress: Cortisol and the Hypothalamic-Pituitary-Adrenal Axis in the Dartmouth Undergraduate Journal of Science and read the section related to the immune system in closer detail. Using this as a starting point, complete the requirements below using paragraph format to address each topic:

Paragraph 1: Introduction

Note that the inflammatory response and the complement system are mentioned in the article. Now learn more about the inflammatory response and the inflammatory mediators. You will find information on the complement system as well. Do a little research on these components and provide a paragraph explaining the normal function and steps associated with signaling these components. Identify where in this cascade of signaling events that cortisol is thought to interfere.

Paragraph 2: PTSD and the Complement System

Now compare the theory mentioned in the Dartmouth article to the findings in this study on PTSD and the complement system. Focus on the Abstract and Discussion sections of this study on PTSD. Address the following questions:

  1. What did they find in common among PTSD patients?
  2. How does alteration of the complement affect the inflammatory response?

Paragraph 3: Inflammatory

Response and the Brain

Finally, read The Consequences of the Inflamed Brain and draw connections between the inflammatory response and brain function and behavior. How are the CNS and the immune system interconnected? How does the inflammatory response affect mood and behavior?

Which component of the nervous system reacts to an infection? What are the implications for mood and behavior if the inflammatory response is prolonged? What types of things might cause the inflammatory response to become prolonged or exaggerated?

Paragraph 4: Conclusions

To complete this assignment, “connect the dots” between the influence of stress on the immune system, the potential effects that PTSD can have on the inflammatory response (remember this occurs after an extremely stressful event and is related to dysregulation of cortisol), and the perpetuation of depression and other symptoms of PTSD.

Assignment Expectations

You are provided with many scholarly references to complete this assignment. Include a References section that lists these and any additional sources you used (refer to the Background page). For any additional research you are required to do to complete your assignment, please use scholarly references such as a peer-reviewed journal article or a government-sponsored or university-sponsored website. As you read through your sources, take notes from your sources and then write your paper in your own words, describing what you have learned from your research. Direct quotes should be limited and must be designated by quotation marks. Paraphrased ideas must give credit to the original author, for example (Murray, 2014). Direct copying from “homework help” websites will not receive credit.

For this Case Assignment, answer all questions using full sentences and use the headings provided above to organize your paper.

Paper 2

You must complete your Case 3 assignment before you can proceed with this assignment.

In this module’s SLP assignment, you will take a break from the anatomy and physiology of stress to analyze the work you have done so far, specifically in your Module 3 Case Assignment.

The readings you accomplished for Module 3’s Case Assignment are quite new scientific theories that are currently being tested by scientists who are trying to figure out why individuals suffer from behavioral issues such as depression and PTSD. The scientific and medical communities have collected a lot of evidence that stress plays a very big role in not only creating these behaviors, but also perpetuating them. We still have a long way to go and a lot of unanswered questions!

By completing Case 3, you have participated in the scientific method. After you view this linked animation, use this diagram as your reference point to complete the following components of this assignment:

  • In which part of the Case Assignment did you address Step 1, “observe and generalize”?
  • Which part of the Case Assignment required you to accomplish Step 2, “formulate a hypothesis”?
  • Did your hypothesis contain information that can be accepted as the absolute truth? If not, what information was missing? (HINT: Think back to the studies about cortisol and PTSD.) Based on the information that was missing from your hypothesis, what could you test in order to obtain more information on the unknown piece?
  • Do a bit of research on the technology available today that could facilitate this test. Examples of new technology include brain imaging, blood chemistry and hormone level tests, CAT scans, MRIs, and DNA mapping. What step of the scientific method does this require?
  • Now that you have some additional information, briefly and in simple terms, describe how you would test the missing information and which step of the scientific method this accomplishes.

SLP Assignment Expectations

For this SLP assignment, answer all questions using full sentences in paragraph format. For any additional research you are required to do to complete your assignment, please use scholarly references such as a peer reviewed journal article or a government sponsored or university sponsored website. As you read through your sources, take notes from your sources and then write your paper in your own words, describing what you have learned from your research. Direct quotes should be limited and must be designated by quotation marks. Paraphrased ideas must give credit to the original author, for example (Murray, 2014). Direct copying from “homework help” websites will not receive credit.

Module 4 - Case

STRESS AND THE CARDIOVASCULAR AND DIGESTIVE SYSTEMS

STOP!!! YOU MUST HAVE COMPLETED THE TUTORIALS ON THE CARDIOVASCULAR SYSTEM ON THE HOME PAGE BEFORE YOU WILL BE ABLE TO COMPLETE THIS ASSIGNMENT!

Case Assignment

In this Case Assignment, you will address the following in a 2- to 3-page essay:

First complete this exercise to identify the factors that have an effect onheart rate.

In your introductory paragraph, explain:

  1. Which factors contributed to an increase in HR, and
  2. Which factors contributed to a decrease in HR?

Now view the videoStress effects on the heartand read the following resources on hypertension and stress:

Stress and Blood Pressure, by the American Heart Association

Effect of psychological stress on blood pressure increase: a meta-analysis of cohort studies. Gasperin, D et al. 2009. Cad. Saúde Pública, Rio de Janeiro, 25(4):715-726.

Based on what you read and observed, address the following questions in the body of your essay:

  1. What is the risk of stress on the heart?
  2. What are the contributions of the nervous system to the increased workload that the heart experiences when an individual is stressed?
  3. Do some additional research to define “myocardial infarction risk.” What do Gasperin et al. (2009) say about the relationship between stress and myocardial infarction risk?
  4. Using the resources above, define “hypertension.” Summarize the results reported by Gasperin et al. (2009) about stress and hypertension. What was successful in lowering hypertension?
  5. In a conclusion paragraph write about what surprised you as you completed the readings/video for this Case study?

Assignment Expectations

You are provided with many scholarly references to complete this assignment. Include a References section that lists these sources (refer to the Background page). For any additional research you are required to do to complete your assignment, please use scholarly references such as a peer-reviewed journal article or a government-sponsored or university-sponsored website. As you read through your sources, take notes from your sources and then write your paper in your own words, describing what you have learned from your research. Direct quotes should be limited and must be designated by quotation marks. Paraphrased ideas must give credit to the original author, for example (Murray, 2014).Direct copying from “homework help” websites will not receive credit.

Module 4 - SLP

STRESS AND THE CARDIOVASCULAR AND DIGESTIVE SYSTEMS

In this SLP we will investigate the effects of stress on the digestive system, including its effect onregulating blood sugar levels.As you can see, dysregulation of blood sugar levels can cause metabolic problems and unusually high or low blood sugar levels, such as in diabetes. View the trends fordiabetes in Americademonstrated in the graph.

Now continue to your readings for this SLP assignment:

Why We Gain Weight When We’re Stressed—And How Not To, in Psychology Today

Cortisol Connection: Tips on Managing Stress and Weight, by Christine A. Maglione-Garves, Len Kravitz, Ph.D., and Suzanne Schneider, Ph.D.

Part I: Stress and Weight Gain

Using complete sentences in paragraph format, address the following questions:

What hormones are implicated in the weight gain response that some individuals experience when stressed? Which type of stressor elicits this response? How does this influence fat deposition? What role do dietary choices and cravings play in stress-related weight gain?

Part II: Blood Sugar Regulation

Now review the article from the Dartmouth Undergraduate Science Journal:

The Physiology of Stress: Cortisol and the Hypothalamic-Pituitary-Adrenal Axis

How is the pathway described here different from those described in the first two articles? Which type of stressors influence the relationship between cortisol and insulin? Are the health risks different?

Part III: Conclusions

In a conclusion paragraph, compare and contrast the influence of short- and long-term stress effects on blood sugar regulation and fat deposition. Are these responses related to health risks in the cardiovascular system? Explain the connections between the body’s response to stress described in these articles and other health risks such a high cholesterol and hypertension.

SLP Assignment Expectations

Organize this assignment using the subtitles that summarize each group of questions. Answer each question under the subtitle using complete sentences that relate back to the question. Be sure to include a references section at the end of your assignment that lists the websites and articles used above and any additional resources you used to research your answers. Follow the format provided in the Background page.

Module 5 - Case

STRESS EFFECTS ON THE EXCRETORY AND REPRODUCTIVE SYSTEMS

STOP!!! YOU MUST HAVE COMPLETED THE TUTORIALS AND VIEWED ALL LINKS ON THE MODULE 5 HOME PAGE IN ORDER TO COMPLETE THIS CASE ASSIGNMENT!!!!

Case Assignment

Now that you have reviewed the anatomy and physiology of reproduction, let’s continue to investigate the influence of the stress response on human reproductive function. We will begin by investigating the interactions between hormones responsible for regulating female reproductive cycles and the stress hormones.

First read some background on stress and reproduction in the article, “Stress puts double whammy on reproductive system,” By Robert Sanders, UC Berkeley News. 15 June 2009.

Next read the review by Kalantaridou, N.S., et al. Stress and the female reproductive system. Journal of Reproductive Immunology. 2004.62:61–68, and address the following questions in paragraph format:

1. What term is used in this article to describe the regulatory axis of the reproductive system? What is the principle regulatory hormone for this axis?

2. What effects does the HPA axis have on the female reproductive system? What two hormones are described in this article and what are the general effects of these hormones on female reproductive organs?

3. Which female reproductive organs normally respond to CRH? What effect does this hormone have on these organs? What is the role of this hormonal signal in regulating reproduction? Use Table 2 and do a little outside research to look up any unfamiliar terms.

4. Recall the information that you have reviewed in previous modules about unregulated cortisol and stress hormone release on the other systems of the body. What are the implications of dysregulation of CRH and glucocorticoids for human reproduction? Describe the physiological and psychological effects that these hormones can have relative to female reproduction.

Assignment Expectations

Organize this assignment by answering the questions above in four paragraphs that align with the numbering above. Answer each question using complete sentences that relate back to the question. Be sure to include a references section at the end of your assignment that lists the websites and articles used above and any additional resources you used to research your answers. Follow the format provided in the Background page.

Module 5 - SLP

STRESS EFFECTS ON THE EXCRETORY AND REPRODUCTIVE SYSTEMS

Review the tutorials and links on your Home page to better develop the foundation you will need to complete this final SLP assignment.

Do a Google search of labeled images of the kidneys and the nephron. Develop a 10-slide PowerPoint presentation that addresses the following questions regarding the stress response and kidney function:

Slides 1–3:Provide an overview of kidney structure and function. Note where osmosis and ion secretion take place and how this contributes to water and BP regulation.

Slides 4–7:How do the kidneys regulate BP? What stress hormone(s) are involved? What situation(s) cause(s) this signaling pathway?

Slides 8 and 9:How do the kidneys respond to dehydration? Do a little research on the effect of caffeine on the kidney. Where in the physiology of the nephron does caffeine interfere with normal regulation of water balance?

Slide 10:References cited.

SLP Assignment Expectations

For this SLP assignment you will develop a PowerPoint presentation that is approximately 10 slides in length and addresses the requirements outlined above. Place the text containing the answers to the questions above in the Notes section of your slide presentation. Reference all of your answers in your Notes sections with citations, such as (Murray 2014). Your slides should contain labeled images that illustrate the text that you included in your Notes sections. Provide the website or reference used for each labeled image. Be sure your last slide is a references slide that contains the full references cited on your slides. Many resources are provided for you. Include these in your references section. This assignment should not require much independent research.

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