Review these Autonomic Nervous System – Quiz 3 nursing practice questions with answer choices and explanations.
Which structure acts as a modified sympathetic ganglion?
Correct answer:
Explanation: The adrenal medulla releases epinephrine and norepinephrine into blood.
What hormone is mainly released by the adrenal medulla?
Correct answer:
Explanation: Adrenal medulla releases epinephrine.
Which receptor subtype is primarily found in the heart?
Correct answer:
Explanation: Beta1 receptors increase heart rate and contractility.
Which receptor subtype causes vasodilation in skeletal muscle?
Correct answer:
Explanation: Beta2 receptors cause vasodilation.
Which division of the ANS is responsible for ejaculation?
Correct answer:
Explanation: Sympathetic controls ejaculation.
Which division is responsible for erection?
Correct answer:
Explanation: Parasympathetic controls erection.
Which part of the brain regulates autonomic functions?
Correct answer:
Explanation: Hypothalamus is the main ANS control center.
Which system controls sweating?
Correct answer:
Explanation: Sympathetic system controls sweat glands.
Sweat glands are unique because they use:
Correct answer:
Explanation: Sympathetic fibers to sweat glands release acetylcholine.
Which type of receptor is found in autonomic ganglia?
Correct answer:
Explanation: Nicotinic receptors are found in ganglia.
Which division of ANS has more localized effects?
Correct answer:
Explanation: Parasympathetic effects are more specific.
What is autonomic tone?
Correct answer:
Explanation: Tone refers to constant baseline activity.
Sympathetic tone primarily maintains:
Correct answer:
Explanation: Sympathetic tone maintains vascular tone.
Parasympathetic tone primarily maintains:
Correct answer:
Explanation: Parasympathetic tone supports digestion.
Which system includes the enteric nervous system?
Correct answer:
Explanation: Enteric system is part of ANS.
The enteric nervous system mainly controls:
Correct answer:
Explanation: Enteric system regulates the GI tract.
Which reflex controls blood pressure?
Correct answer:
Explanation: Baroreceptors regulate blood pressure.
Baroreceptors are located in:
Correct answer:
Explanation: Carotid sinus contains baroreceptors.
Chemoreceptors monitor:
Correct answer:
Explanation: They detect oxygen, CO2, and pH.
Which ANS division increases salivation?
Correct answer:
Explanation: Parasympathetic increases watery saliva.
Which ANS division decreases salivation?
Correct answer:
Explanation: Sympathetic reduces saliva.
Which system promotes glycogen breakdown?
Correct answer:
Explanation: Sympathetic increases glucose availability.
Which system promotes glycogen storage?
Correct answer:
Explanation: Parasympathetic stores energy.
Which division stimulates adrenal medulla?
Correct answer:
Explanation: Sympathetic activates adrenal medulla.
Which receptor causes increased heart rate?
Correct answer:
Explanation: Beta1 increases heart rate.
Which receptor decreases heart rate?
Correct answer:
Explanation: Muscarinic receptors slow heart.
Which ANS division stimulates bladder emptying?
Correct answer:
Explanation: Parasympathetic contracts bladder.
Which ANS division promotes urine retention?
Correct answer:
Explanation: Sympathetic relaxes bladder.
Which division stimulates pupil constriction?
Correct answer:
Explanation: Parasympathetic causes miosis.
Which division increases metabolic rate?
Correct answer:
Explanation: Sympathetic increases metabolism.