$$\text{Motor Homunculus} = f(\text{Body Region Sensitivity})$$

Question 1

Which primary brain vesicle gives rise to the adult structure known as the cerebrum?

Accepted Answer

Prosencephalon

Question 2

A patient suffers a stroke that damages the left precentral gyrus. Which of the following symptoms is most likely to occur?

Accepted Answer

Paralysis of voluntary movements on the right side of the body

Question 3

Which of the following best describes the function of the corpus callosum?

Accepted Answer

It connects the two cerebral hemispheres, allowing communication between them

Question 4

Which lobe of the brain is primarily responsible for processing visual information?

Accepted Answer

Occipital lobe

Question 5

Which of the following statements about the meninges is CORRECT?

Accepted Answer

The dura mater consists of two layers in the brain but only one in the spinal cord

Question 6

Which of the following fiber types connects the left and right cerebral hemispheres?

Accepted Answer

Commissural fibers

Question 7

A lesion in the postcentral gyrus would most likely result in which of the following deficits?

Accepted Answer

Loss of conscious touch and proprioception

Question 8

Which pathway transmits pain and temperature sensations to the brain?

Accepted Answer

Spinothalamic pathway

Question 9

Which of the following is TRUE regarding the lateralization of cortical function?

Accepted Answer

The left hemisphere controls language, math, and logic in most people

Question 10

Which structure is responsible for the production and circulation of cerebrospinal fluid (CSF)?

Accepted Answer

Choroid plexus

Question 11

A patient presents with loss of fine touch and vibration sense below the waist. Which ascending pathway is most likely damaged?

Accepted Answer

Dorsal column–medial lemniscal pathway

Question 12

Which of the following best describes the organization of gray and white matter in the spinal cord?

Accepted Answer

White matter surrounds a central core of gray matter

Question 13

Which brain region acts as the main relay station for sensory information ascending to the cerebral cortex?

Accepted Answer

Thalamus

Question 14

Which of the following is a function of the premotor cortex?

Accepted Answer

Planning and coordination of learned, patterned motor skills

Question 15

Which of the following equations correctly represents the spatial mapping of the body in the primary motor cortex?

Accepted Answer

$$	ext{Motor Homunculus} = f(	ext{Body Region Sensitivity})$$

Question 16

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

Accepted Answer

Initiation of voluntary muscle movement

Question 17

A patient with damage to Broca’s area would most likely experience which of the following symptoms?

Accepted Answer

Difficulty producing speech

Question 18

Which of the following best describes the flow of cerebrospinal fluid (CSF) through the ventricular system?

Accepted Answer

Lateral ventricles → interventricular foramen → third ventricle → cerebral aqueduct → fourth ventricle

Question 19

Which of the following is TRUE regarding the function of the cerebellum?

Accepted Answer

It coordinates muscle activity and balance

Question 20

Which of the following best explains why a lesion in the right parietal lobe may result in neglect of the left side of the body?

Accepted Answer

Each hemisphere processes sensory information from the contralateral side of the body

Central Nervous System: Structure, Development, and Functional Organization

Study Guide - Practice Questions