Question 1

Which of the following best describes the main function of the nervous system in maintaining homeostasis?

Accepted Answer

It regulates many aspects of homeostasis in conjunction with the endocrine system.

Question 2

A patient presents with loss of sensation in the skin and muscles of the right arm. Which division of the peripheral nervous system is most likely affected?

Accepted Answer

Somatic sensory division

Question 3

Which structural type of neuron is most commonly found in the central nervous system and is responsible for integrating information?

Accepted Answer

Multipolar neuron

Question 4

Which neuroglial cell is responsible for forming the myelin sheath in the central nervous system?

Accepted Answer

Oligodendrocyte

Question 5

A researcher is studying the transport of substances within a neuron. Which direction does retrograde axonal transport move materials?

Accepted Answer

Toward the cell body

Question 6

Which of the following best describes the role of astrocytes in the central nervous system?

Accepted Answer

They anchor neurons and blood vessels, regulate the extracellular environment, and assist in forming the blood-brain barrier.

Question 7

Which of the following is TRUE regarding the difference between myelination in the CNS and PNS?

Accepted Answer

Oligodendrocytes myelinate axons in the CNS, while Schwann cells myelinate axons in the PNS.

Question 8

A patient has damage to the autonomic nervous system. Which of the following functions is most likely to be impaired?

Accepted Answer

Regulation of secretion from certain glands and heart contraction

Question 9

Which of the following correctly matches the neuronal component with its definition?

Accepted Answer

Nuclei: Clusters of cell bodies in the CNS

Question 10

Which equation best represents the increase in conduction speed due to myelination, if unmyelinated axons conduct at $$v$$ and myelinated axons conduct at $$15v to$$ $$150v$$?

Accepted Answer

$$v_{myelinated} = 15v to$$ $$150v$$

Question 11

A patient with multiple sclerosis has demyelination in the CNS. Which cell type is most likely affected?

Accepted Answer

Oligodendrocytes

Question 12

Which functional region of a neuron is responsible for secreting chemical signals to communicate with target cells?

Accepted Answer

Secretory region

Question 13

Which of the following is a correct pathway for sensory information in the nervous system?

Accepted Answer

Sensory receptor → Sensory neuron → CNS

Question 14

Which neuroglial cell type is responsible for producing, circulating, and monitoring the composition of cerebrospinal fluid (CSF)?

Accepted Answer

Ependymal cells

Question 15

A patient suffers a spinal cord injury that disrupts the transmission of motor signals to the legs. Which division of the nervous system is most directly affected?

Accepted Answer

Motor (efferent) division of the PNS

Question 16

Which of the following is TRUE about Schwann cells?

Accepted Answer

They produce myelin sheaths for axons in the PNS and can repair damaged axons.

Question 17

Which type of neuron is most likely to be found in the retina and olfactory epithelium?

Accepted Answer

Bipolar neuron

Question 18

Which of the following best describes the function of microglia in the CNS?

Accepted Answer

They act as phagocytes, digesting pathogens and cellular debris after injury.

Question 19

A nerve is defined as:

Accepted Answer

A bundle of axons in the PNS

Question 20

Which equation best represents the relationship between the number of Schwann cells ($$n) $$and the number of axons ($$a) $$they can enclose in unmyelinated axons of the PNS?

Accepted Answer

$$n \u003c a$$

SCB-204 Human Anatomy & Physiology II – Course Syllabus and Policies

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드