Question 1

Which region of the central nervous system (CNS) do sympathetic nerves primarily originate from?

Accepted Answer

Thoracic and lumbar regions

Question 2

Which of the following best describes the length of preganglionic and postganglionic neurons in the sympathetic nervous system?

Accepted Answer

Short preganglionic, long postganglionic

Question 3

Which neurotransmitter is primarily released by postganglionic sympathetic neurons at most target organs?

Accepted Answer

Norepinephrine

Question 4

Which cranial nerve is responsible for carrying parasympathetic fibers to the heart, lungs, and digestive tract?

Accepted Answer

Cranial nerve X (Vagus)

Question 5

A patient presents with dilated pupils and increased heart rate after a car accident. Which division of the autonomic nervous system is most likely activated?

Accepted Answer

Sympathetic nervous system

Question 6

Which of the following is a primary effector of the autonomic nervous system (ANS)?

Accepted Answer

Cardiac muscle

Question 7

Which of the following best describes the response of the pupil under sympathetic stimulation?

Accepted Answer

Dilation (mydriasis)

Question 8

Which of the following is the correct sequence for the light pathway through the eye?

Accepted Answer

Cornea → pupil → lens → retina

Question 9

Which of the following best describes the effect of parasympathetic stimulation on the heart?

Accepted Answer

Decreases heart rate

Question 10

Which of the following cranial nerves innervates the muscles that move the eyeball?

Accepted Answer

Cranial nerve III (Oculomotor)

Question 11

Which of the following is a function of the ciliary body in the eye?

Accepted Answer

Controls the shape of the lens

Question 12

Which of the following best describes the effect of sympathetic stimulation on the bronchioles of the lungs?

Accepted Answer

Bronchodilation

Question 13

A patient is experiencing increased salivation and digestive activity. Which division of the autonomic nervous system is most likely responsible?

Accepted Answer

Parasympathetic nervous system

Question 14

Which of the following is NOT a function of the autonomic nervous system?

Accepted Answer

Control of skeletal muscle contraction

Question 15

Which of the following best describes the neurotransmitter released by preganglionic neurons in both the sympathetic and parasympathetic divisions?

Accepted Answer

Acetylcholine

Question 16

Which of the following is the correct formula for calculating cardiac output ($$CO) $$given heart rate ($$HR) $$and stroke volume ($$SV$$)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 17

Which of the following best describes the effect of parasympathetic stimulation on the urinary bladder?

Accepted Answer

Contracts the detrusor muscle

Question 18

Which of the following is a real-life example of sympathetic nervous system activation?

Accepted Answer

Running from a dangerous animal

Question 19

Which of the following cranial nerves carries sensory information from the retina to the brain?

Accepted Answer

Cranial nerve II (Optic)

Question 20

Which of the following best describes the effect of sympathetic stimulation on the sweat glands?

Accepted Answer

Increases sweat production

Final Page 4

Study Guide - Practice Questions

Study Guide - Flashcards