BIOS 252 COMP EXAM QUESTIONS AND ANSWERS 2025

BIOS 252 COMP EXAM 2024
ANSWER ALL QUESTIONS IN THIS SECTION



QUESTION 1



Which of the following are functions of various neuroglial cells



A. Forming myelin sheaths on axons

B. Secreting cerebrospinal fluid

C. Transmitting electrical impulses to the spinal cord

D. Storing episodic memories

E. Acting as phagocytes - ANSWERS-A. Forming myelin sheaths on axons, B.
Secreting cerebrospinal fluid, E. Acting as phagocytes



QUESTION 2



During active muscle contraction, the myosin heads will bind to which protein?



A. Dystrophin

B. Actin

C. Titan

D. Troponin

E. Tropomyosin - ANSWERS-B. Actin
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, BIOS 252 COMP EXAM 2024

QUESTION 3



Which of the following glial cells are NOT found in the Central Nervous System?



A. Astrocytes

B. Schwann cells

C. Oligodendrocytes

D. Ependymal cells

E. Microglial cells - ANSWERS-B. Schwann cells



QUESTION 4



Which of the following would increase the conduction velocity of an action
potential?



A. Myelin sheath covering the axon

B. Colder temperatures

C. Longer axon length

D. Increased intensity of the action potential

E. Higher (less negative) resting membrane potential - ANSWERS-A. Myelin
sheath covering the axon

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, BIOS 252 COMP EXAM 2024

QUESTION 5



Which of the following is described as the most important function of the Reticular
Activating System (RAS)?



A. Coordination of fine motor movement and balance

B. Maintenance of consciousness

C. Visual processing

D. Formation of speech motor patterns

E. Linking psychological states to psychological states - ANSWERS-B.
Maintenance of consciousness



QUESTION 6



The term posterior means



A. Nearer to or at the front of the body

B. Nearer to or at the back of the body

C. Further from the attachment of a limb

D. Nearer front he attachment of the limb



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