Rio BIO 160 - Intro to Human Anatomy and Physiology

BIO160
Intro to Human Anatomy and Physiology
Lesson 9 Quiz
Each question is 3 points each for a total of 75 points.
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1. What is the function of the nervous system?
Conversion of oxygen to oxyhemoglobin
Storage of sodium and potassium
Production of enzymes for neural impulses
Monitoring of changes in the body
Generation of energy for the rest of the body
2. The peripheral nervous system is made up of which of the following?
Spinal nerves only
The brain only
Cranial nerves only
The brain and spinal cord
The spinal and cranial nerves
3. What are Schwann cells?
Neuroglia that form a myelin sheath around nerves in the peripheral system
Neurons that conduct sensory impulses to the central nervous system
Neuroglia in the central nervous system that remove debris
Neurons that send impulses between the central and peripheral systems

Neuroglia that account for nearly half of the neural tissue in the brain
4. What are the neuron processes that normally carry impulses away from the cell
body?
axons
dendrites
neurilemmas
oligodendrites
satellite cells
5. What is the classification of a neuron when the cell body is located in the CNS and
the primary function is connecting other neurons?

Efferent neuron
Afferent neuron
Association neuron
Glial neuron
Satellite neuron
6. Which of the following describes the ability to respond to a stimulus?
Polarization
Depolarization
Conductivity
Irritability
Myelination
7. What type of reflex regulates the activity of smooth muscles?

Somatic
Flexor
Cerebral
Synaptic
Autonomic
8. What structures are located in the diencephalon?
Thalamus, hypothalamus, and epithalamus
Thalamus, pons, and midbrain
Pons, midbrain, and medulla oblongata
Hypothalamus, pituitary gland, and medulla oblongata
Cerebellum, pons, and thalamus
9. What lobe of the brain contains the primary somatic sensory area that receives and
interprets impulses from the body's general sensory receptors?
Occipital
Parietal
Temporal
Frontal
Diencephalon
10. What structure represents a two-way conduction path to the brain and is a major
reflex center?
Brain stem
Pons

Thalamus
Cerebellum
Spinal cord
11. Which of the following is a correct description of the autonomic nervous system?
It is the sensory subdivision of the PNS that feels anger.
It has centers in the brain and the spinal cord.
It is the motor subdivision of the PNS that controls smooth muscles and glands.
It is the efferent system that controls skeletal muscles in time of danger.
It has both afferent and efferent fibers.
12. Which of the following describes the activity of the sympathetic nervous system?
It mobilizes when the body experiences extreme situations.
It decreases sweat gland activity.
It normalizes digestive activity.
It conserves energy.
It decreases demands on the cardiovascular system.
13. Which of the following describes spina bifida?
Brain tissue death due to a ruptured blood vessel
Temporary lack of oxygen during birth
Protruding spinal cord resulting in a lack of motor function below that area
Cerebrospinal fluid retention which causes pressure on the brain
Destruction of myelin sheaths around nerve fibers
14. Which of the following describes the optic lens?

It is the first structure that light hits entering the eye and it reflects light to the retina.
It is a photoreceptor that sends impulses to the brain through the optic nerve.
It is the opening surrounded by the iris through which light enters the eyeball.
It divides the eye into two chambers and focuses light on the retina.
It constricts when light enters the eye and regulates the amount of light focused on the
retina.
15. What is the function of the ossicles?
They collect sound waves and send them to the tympanic membrane.
They equalize the pressure between the outside and the middle ear.
They transfer vibrations to the fluids of the inner ear.
They form the semicircular canals.
They sense movement of the endolymph and send that impulse to the vestibular nerve.
16. The hair cells that function as hearing receptors are located in which of the
following?
Auditory tube
Spiral organ of Corti
Oval window
Auricle
Ossicles
17. What is glaucoma?
Decreased lens elasticity
Unequal pull of the external eye muscles

Increased pressure in the eye
Hardening of the lens
Abnormal surface of the cornea
18. What are the chemical messengers of the human body called?
Effectors
Target cells
Hormones
Neurons
Stimuli
19. What is a cell called when it presents a protein on its membrane that is specific for
a hormone?
Depolarized cell
Target cell
Haploid cell
Effector cell
Second messenger cell
20. Which of the following is the chief means of regulating blood levels of hormones?
Collateral feedback
Cerebral feedback
Synaptic feedback
Negative feedback
Positive feedback

21. What endocrine gland is controlled by hormones produced in the hypothalamus?
Thalamus
Anterior pituitary
Posterior pituitary
Parathyroid
Adrenal gland
22. Which of the following hormones exerts its primary effects on the reproductive
organs?
Follicle stimulating hormone
Adrenocorticotropic hormone
Prolactin
Thyroid stimulating hormone
Growth hormone
23. What hormone is produced in response to low blood sugar levels?
Prolactin
Insulin
Melatonin
Glucagon
Growth hormone
24. What organ produces human chorionic gonadotropin?
Ovary

Testis
Placenta
Anterior pituitary
Adrenal gland
25. What homeostatic disorder is associated with the hyposecretion of antidiuretic
hormone?
Diabetes insipidus
Cretinism
Grave's disease
Addison's disease
Cushing's syndrome