Q: Which equation represents the calculation of the total surface area ($$A_{total}) of $$the cerebral cortex if the average area per lobe is $$A_{lobe}$$ and there are 4 lobes?

$$A_{total} = 4 \times A_{lobe}$$

Question 1

Which of the following best describes the function of the hypothalamus in the nervous system?

Accepted Answer

It regulates hunger, thirst, temperature, and emotional behavior by sending releasing and inhibiting factors to the pituitary gland.

Question 2

A patient presents with loss of memory, abnormal behaviors, and protein deposits in the brain. Which condition is most likely responsible?

Accepted Answer

Alzheimer's disease

Question 3

Which type of neuron acts as a bridge between sensory and motor neurons in the central nervous system?

Accepted Answer

Association neuron

Question 4

Which part of the brain is primarily responsible for controlling voluntary activities such as walking and coordination?

Accepted Answer

Cerebellum

Question 5

Which glial cell type is responsible for producing myelin in the central nervous system?

Accepted Answer

Oligodendrocytes

Question 6

A patient has difficulty with balance and coordination after a stroke. Which brain structure is most likely affected?

Accepted Answer

Cerebellum

Question 7

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

Accepted Answer

They protect the CNS from injury and infection by covering the brain and spinal cord.

Question 8

Which equation correctly represents the relationship between the number of dendrites ($$D$$), axons ($$A$$), and total number of processes ($$P) in a $$multipolar neuron?

Accepted Answer

$$P = D + A$$

Question 9

During the fight-or-flight response, which division of the autonomic nervous system is activated and what is one physiological effect?

Accepted Answer

Sympathetic; increased heart rate

Question 10

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

Accepted Answer

Corpus callosum

Question 11

A patient is unable to regulate body temperature and experiences abnormal hunger and thirst. Which brain region is most likely damaged?

Accepted Answer

Hypothalamus

Question 12

Which of the following is TRUE about the production and function of cerebrospinal fluid (CSF)?

Accepted Answer

CSF is produced in the epithalamus and acts as a shock absorber for the CNS.

Question 13

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

Accepted Answer

They act as a barrier, protecting neurons from toxins and maintaining the blood-brain barrier.

Question 14

Which equation represents the calculation of the total surface area ($$A_{total}) of $$the cerebral cortex if the average area per lobe is $$A_{lobe}$$ and there are 4 lobes?

Accepted Answer

$$A_{total} = 4 	imes A_{lobe}$$

Question 15

Which of the following is a correct description of a monosynaptic reflex arc?

Accepted Answer

It involves a sensory neuron synapsing directly with a motor neuron.

Question 16

A patient is unable to maintain homeostasis, showing symptoms such as loss of muscle control and breakdown of neurons. Which process is most likely impaired?

Accepted Answer

Homeostatic control by the nervous system

Question 17

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

Accepted Answer

It acts as a relay station for sensory impulses going to the cerebral cortex.

Question 18

Which of the following is TRUE regarding the spinal cord?

Accepted Answer

It connects the CNS with the brain and controls reflexes.

Question 19

Which equation correctly represents the calculation of the conduction velocity ($$v) of a $$nerve impulse if the distance ($$d) $$traveled is 1.5 meters and the time ($$t) $$taken is 0.005 seconds?

Accepted Answer

$$v = d / t$$

Question 20

Which of the following best describes the function of the pineal gland?

Accepted Answer

It controls circadian rhythms by releasing melatonin.

Nervous System: Structure, Function, and Organization

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