$$N_{nerves} = N_{segments} \times 2$$

Question 1

Which of the following best describes the difference between white matter and gray matter in the central nervous system?

Accepted Answer

White matter consists mainly of myelinated axons, while gray matter is composed of unmyelinated somas, dendrites, and axons.

Question 2

A patient presents with loss of sensation in the right arm. Which spinal cord structure is most likely affected?

Accepted Answer

Dorsal root

Question 3

Which region of the brainstem is primarily responsible for regulating cardiovascular and respiratory centers?

Accepted Answer

Medulla

Question 4

The reticular formation is crucial for which of the following functions?

Accepted Answer

Maintaining consciousness and alertness

Question 5

Which of the following best explains the role of the cerebellum in motor control?

Accepted Answer

It coordinates movement and provides feedback to correct errors.

Question 6

A spinal reflex is characterized by which of the following?

Accepted Answer

Integration occurs in the spinal cord without input from the brain.

Question 7

Which equation best represents the relationship between the number of spinal cord segments and spinal nerves?

Accepted Answer

$$N_{nerves} = N_{segments} 	imes 2$$

Question 8

Damage to the substantia nigra in the midbrain is most likely to result in which clinical condition?

Accepted Answer

Parkinson's disease

Question 9

Which structure acts as a relay center for sensory information traveling to the cerebral cortex?

Accepted Answer

Thalamus

Question 10

The hypothalamus is involved in all of the following EXCEPT:

Accepted Answer

Initiating voluntary muscle movement

Question 11

Which of the following best describes the function of the anterior pituitary?

Accepted Answer

It is endocrine tissue that releases hormones controlling growth, metabolism, and reproduction.

Question 12

A lesion in the dorsal columns of the spinal cord would most likely affect which type of information?

Accepted Answer

Sensory information ascending to the brain

Question 13

Which of the following is TRUE regarding the organization of the spinal cord?

Accepted Answer

White matter is located on the outside, and gray matter is on the inside.

Question 14

Which equation best describes the role of the hypothalamus in maintaining homeostasis?

Accepted Answer

$$Homeostasis = f(Temperature, Osmolarity, Glucose, Hormones)$$

Question 15

Which of the following is a function of the medullary respiratory center?

Accepted Answer

Control of breathing rate and rhythm

Question 16

A patient with damage to the pons may experience difficulty with which function?

Accepted Answer

Coordinating breathing

Question 17

Which of the following best describes the role of the posterior pituitary?

Accepted Answer

It is neural tissue that stores and releases oxytocin and vasopressin.

Question 18

Which pathway would a motor command from the brain to a skeletal muscle most likely follow?

Accepted Answer

Descending tract in the ventral column

Question 19

Which of the following is NOT a function of the hypothalamus?

Accepted Answer

Regulating voluntary movement

Question 20

A patient with a lesion in the thalamus would most likely experience which of the following symptoms?

Accepted Answer

Impaired sensory relay to the cortex

Central Nervous System: Structure and Function (Neuro 7, Chapter 9)

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