Question 1

Which of the following best describes the primary function of the myelin sheath in the nervous system?

Accepted Answer

It acts as an electrical insulator, speeding up nerve impulse transmission.

Question 2

A patient suffers a stroke that damages the occipital lobe of the brain. Which function is most likely to be impaired?

Accepted Answer

Vision

Question 3

Which of the following is TRUE regarding the difference between the sympathetic and parasympathetic divisions of the autonomic nervous system?

Accepted Answer

The sympathetic division increases heart rate and blood pressure during emergencies.

Question 4

Which structure is responsible for producing cerebrospinal fluid (CSF)?

Accepted Answer

Choroid plexus

Question 5

A person is unable to say words properly but understands language. Damage to which area of the brain is most likely responsible?

Accepted Answer

Broca's area

Question 6

Which of the following best describes the flow of light and visual information from the cornea to the brain?

Accepted Answer

Cornea → lens → retina → optic nerve → thalamus → occipital lobe

Question 7

Which of the following is a correct pairing of muscle tissue type and its characteristic?

Accepted Answer

Smooth muscle – single, fusiform, uninucleate, no striations

Question 8

Which of the following is the correct order of the five elements of a reflex arc?

Accepted Answer

Receptor → sensory neuron → integration center → motor neuron → effector

Question 9

Which brain region is primarily responsible for maintaining balance and coordinating voluntary muscle movements?

Accepted Answer

Cerebellum

Question 10

Which of the following statements about the blood-brain barrier is correct?

Accepted Answer

It is formed by the tight junctions of capillary endothelial cells.

Question 11

A patient with damage to the dorsal root of the spinal cord would most likely experience which of the following?

Accepted Answer

Loss of sensation from the affected body area

Question 12

Which of the following cranial nerves is the only one to extend beyond the head and neck into the thoracic and abdominal cavities?

Accepted Answer

Vagus nerve (X)

Question 13

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

Accepted Answer

Regulates body temperature, water balance, and metabolism

Question 14

Which of the following is a function of the medulla oblongata?

Accepted Answer

Regulation of heart rate and blood pressure

Question 15

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

Accepted Answer

White matter contains myelinated fibers; gray matter contains unmyelinated fibers and cell bodies.

Question 16

Which of the following is the correct pathway for the flow of cerebrospinal fluid (CSF) through the brain ventricles?

Accepted Answer

Lateral ventricles → third ventricle → cerebral aqueduct → fourth ventricle → central canal

Question 17

Which of the following is a special movement that allows you to turn the sole of your foot medially?

Accepted Answer

Inversion

Question 18

Which of the following best describes the function of rods in the retina?

Accepted Answer

They are responsible for vision in dim light.

Question 19

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

Accepted Answer

It processes information from the cerebral motor cortex and sensory receptors to coordinate balance and posture.

Question 20

Which of the following best describes the function of the lacrimal apparatus?

Accepted Answer

It produces and drains tears that cleanse and protect the eye.

BIO 163: Skeletal, Muscular, and Nervous System Study Guide

Study Guide - Practice Questions