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Autonomic Nervous System – Quiz 5

Question 1 of 30

Sympathetic outflow originates from which spinal segments?

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Autonomic Nervous System – Quiz 5 Practice Questions

Review these Autonomic Nervous System – Quiz 5 nursing practice questions with answer choices and explanations.

Question 1

Sympathetic outflow originates from which spinal segments?

  1. C1–C8
  2. T1–L2
  3. L3–S5
  4. S2–S4
View answer and explanation

Correct answer:

  1. T1–L2

Explanation: Sympathetic division is thoracolumbar (T1–L2).

Question 2

Parasympathetic outflow originates from which segments?

  1. T1–L2
  2. Craniosacral
  3. Thoracic only
  4. Lumbar only
View answer and explanation

Correct answer:

  1. Craniosacral

Explanation: Parasympathetic is craniosacral.

Question 3

Which cranial nerve carries parasympathetic fibers to the heart?

  1. CN III
  2. CN VII
  3. CN IX
  4. CN X
View answer and explanation

Correct answer:

  1. CN X

Explanation: The vagus nerve (CN X) supplies heart and organs.

Question 4

Which cranial nerve controls pupil constriction?

  1. CN II
  2. CN III
  3. CN V
  4. CN VIII
View answer and explanation

Correct answer:

  1. CN III

Explanation: Oculomotor nerve carries parasympathetic fibers.

Question 5

Which cranial nerve stimulates salivary glands?

  1. CN VII
  2. CN VIII
  3. CN XI
  4. CN XII
View answer and explanation

Correct answer:

  1. CN VII

Explanation: Facial nerve controls salivary glands.

Question 6

Which type of ganglia are located along the sympathetic chain?

  1. Terminal
  2. Paravertebral
  3. Intramural
  4. Cranial
View answer and explanation

Correct answer:

  1. Paravertebral

Explanation: Paravertebral ganglia form the sympathetic chain.

Question 7

Which ganglia are located near abdominal organs?

  1. Paravertebral
  2. Prevertebral
  3. Cranial
  4. Terminal
View answer and explanation

Correct answer:

  1. Prevertebral

Explanation: Prevertebral ganglia are near abdominal organs.

Question 8

Which nerve carries sympathetic fibers to abdominal organs?

  1. Vagus nerve
  2. Splanchnic nerve
  3. Phrenic nerve
  4. Sciatic nerve
View answer and explanation

Correct answer:

  1. Splanchnic nerve

Explanation: Splanchnic nerves carry sympathetic fibers.

Question 9

Which receptor type inhibits neurotransmitter release?

  1. Alpha1
  2. Alpha2
  3. Beta1
  4. Beta2
View answer and explanation

Correct answer:

  1. Alpha2

Explanation: Alpha2 receptors inhibit norepinephrine release.

Question 10

Which receptor increases cardiac contractility?

  1. Alpha1
  2. Beta1
  3. Beta2
  4. Muscarinic
View answer and explanation

Correct answer:

  1. Beta1

Explanation: Beta1 increases heart strength.

Question 11

Which receptor causes vasodilation in skeletal muscle?

  1. Alpha1
  2. Alpha2
  3. Beta1
  4. Beta2
View answer and explanation

Correct answer:

  1. Beta2

Explanation: Beta2 causes vasodilation.

Question 12

Which receptor causes vasoconstriction?

  1. Beta2
  2. Alpha1
  3. Muscarinic
  4. Nicotinic
View answer and explanation

Correct answer:

  1. Alpha1

Explanation: Alpha1 receptors constrict vessels.

Question 13

Horner’s syndrome is caused by damage to which system?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Loss of sympathetic causes ptosis and miosis.

Question 14

Which symptom is seen in Horner’s syndrome?

  1. Dilated pupil
  2. Constricted pupil
  3. Increased sweating
  4. High heart rate
View answer and explanation

Correct answer:

  1. Constricted pupil

Explanation: Loss of sympathetic leads to miosis.

Question 15

Which system is primarily active in shock?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Enteric
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic increases heart rate and vasoconstriction.

Question 16

Which receptor type is targeted by atropine?

  1. Alpha
  2. Beta
  3. Muscarinic
  4. Nicotinic
View answer and explanation

Correct answer:

  1. Muscarinic

Explanation: Atropine blocks muscarinic receptors.

Question 17

Atropine increases heart rate by blocking:

  1. Sympathetic
  2. Parasympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Parasympathetic

Explanation: Blocking parasympathetic increases heart rate.

Question 18

Which neurotransmitter is released from adrenal medulla?

  1. Acetylcholine
  2. Epinephrine
  3. Dopamine
  4. Serotonin
View answer and explanation

Correct answer:

  1. Epinephrine

Explanation: Adrenal medulla releases epinephrine.

Question 19

Which system controls pupil dilation in darkness?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic dilates pupils.

Question 20

Which system controls visceral reflexes?

  1. Somatic
  2. Autonomic
  3. Central
  4. Peripheral
View answer and explanation

Correct answer:

  1. Autonomic

Explanation: ANS controls visceral functions.

Question 21

Which sensory input does the ANS respond to?

  1. Somatic sensory
  2. Visceral sensory
  3. Motor input
  4. Reflex only
View answer and explanation

Correct answer:

  1. Visceral sensory

Explanation: ANS responds to visceral sensory signals.

Question 22

Which system regulates heart rate without conscious control?

  1. Somatic
  2. Autonomic
  3. Central
  4. Peripheral
View answer and explanation

Correct answer:

  1. Autonomic

Explanation: ANS controls involuntary functions.

Question 23

Which neurotransmitter is released by parasympathetic neurons?

  1. Norepinephrine
  2. Acetylcholine
  3. Dopamine
  4. Epinephrine
View answer and explanation

Correct answer:

  1. Acetylcholine

Explanation: Parasympathetic uses acetylcholine.

Question 24

Which receptor is found at the neuromuscular junction?

  1. Muscarinic
  2. Nicotinic
  3. Alpha
  4. Beta
View answer and explanation

Correct answer:

  1. Nicotinic

Explanation: Nicotinic receptors are at NMJ.

Question 25

Which system has a calming effect on the body?

  1. Sympathetic
  2. Parasympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Parasympathetic

Explanation: Parasympathetic conserves energy.

Question 26

Which system increases oxygen delivery to tissues?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Enteric
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic increases cardiac output.

Question 27

Which ANS division promotes fat breakdown?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic increases metabolism.

Question 28

Which system slows breathing rate?

  1. Sympathetic
  2. Parasympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Parasympathetic

Explanation: Parasympathetic promotes relaxation.

Question 29

Which system increases blood flow to muscles during stress?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Central
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic redirects blood.

Question 30

Which system coordinates fight-or-flight response?

  1. Parasympathetic
  2. Sympathetic
  3. Somatic
  4. Enteric
View answer and explanation

Correct answer:

  1. Sympathetic

Explanation: Sympathetic prepares the body for emergencies.