$$\text{Number of neurons} \propto \text{Surface area}$$

Question 1

Which structure connects the right and left cerebral hemispheres, allowing communication between them?

Accepted Answer

Corpus callosum

Question 2

What is the primary function of the cerebellum?

Accepted Answer

Coordinating movement, posture, and balance

Question 3

Which lobe of the cerebrum is primarily responsible for voluntary motor control, planning, and judgment?

Accepted Answer

Frontal lobe

Question 4

A patient has difficulty comprehending spoken language. Which area of the cerebral cortex is most likely affected?

Accepted Answer

Wernicke’s area

Question 5

Which of the following best describes the function of the thalamus?

Accepted Answer

Acts as the brain’s major sensory relay station

Question 6

The gyri and sulci of the brain serve to:

Accepted Answer

Increase the surface area and processing capacity of the cerebral cortex

Question 7

Which fissure separates the cerebrum from the cerebellum?

Accepted Answer

Transverse cerebral fissure

Question 8

The primary somatosensory cortex is located in which part of the brain?

Accepted Answer

Postcentral gyrus of the parietal lobe

Question 9

Which structure is responsible for maintaining homeostasis by regulating body temperature, hunger, thirst, and hormone secretion?

Accepted Answer

Hypothalamus

Question 10

Damage to the precentral gyrus would most likely result in:

Accepted Answer

Loss of voluntary motor control

Question 11

Which equation best represents the relationship between the number of neurons and the surface area of the cerebral cortex?

Accepted Answer

$$	ext{Number of neurons} \propto 	ext{Surface area}$$

Question 12

A person is unable to coordinate movements involving both sides of the body. Which area is most likely affected?

Accepted Answer

Supplementary motor cortex

Question 13

Which pathway carries sensory information from the peripheral nervous system to the brain?

Accepted Answer

Ascending sensory (afferent) pathway

Question 14

If the pineal gland is damaged, which function is most likely to be disrupted?

Accepted Answer

Sleep-wake cycle regulation

Question 15

Which area of the brain is primarily involved in planning and preparing for voluntary skeletal muscle movements?

Accepted Answer

Premotor cortex

Question 16

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

Accepted Answer

Occipital lobe

Question 17

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

Accepted Answer

Coordinating voluntary movement

Question 18

A patient presents with loss of touch sensation on the right side of the body. Which area of the brain is most likely damaged?

Accepted Answer

Left primary somatosensory cortex

Question 19

Which of the following best describes the function of association areas in the cerebral cortex?

Accepted Answer

Integrate information from different brain regions for reasoning, memory, and decision making

Question 20

Which equation best represents the flow of information in the central nervous system?

Accepted Answer

$$	ext{Sensory input} ightarrow 	ext{Processing} ightarrow 	ext{Motor output}$$

The Central Nervous System: Structure and Function

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