rasmussen Structure and Function of the Human Body Credit by Assessment 01

Body - Spring Quarter 2017

Started on Thursday, July 19, 2018, 9:27 AM

State Finished

Completed on Thursday, July 19, 2018, 9:32 AM

Time taken 4 mins 32 secs

Grade 5 out of 6 (83%)

Question 1

Which statement is regarding homeostasis and feedback loops?

Select one:

a. Most of the body’s feedback loops are positive feedback loops

b. A negative feedback loop reverses or opposes the initial stimulus to return it back into the set point range

c. Only negative feedback loops are utilized to maintain homeostasis

d. Homeostasis is dependent upon effectors that always amplify the initial change to maintain health

Question 2

What is not a component of a feedback loop?

Select one:

a. Set point

b. Metabolism

c. Effector

d. Receptor

Question 3

After a papercut, activated platelets release chemical signals to activate more platelets. In this example, the break in the blood vessel wall is the _______ of a feedback loop.

Select one:

a. Set point

b. Effector

c. Receptor

d. Metabolism

Question 4

Which of the following is an example of a positive feedback loop?

Select one:

a. Producing insulin to regulate blood sugar

b. Shivering to increase body temperature

c. Uterine contractions to expel a fetus during labor

d. Increasing respirations to affect blood oxygen levels

Question 5

Uterine contractions during labor and childbirth are regulated by a positive feedback loop.

Select one:

True

False

Question 6

A positive feedback loop reverses or opposes the initial stimulus to return it back into the set point range.

Select one:

True

False