Review these Autonomic Nervous System – Quiz 4 nursing practice questions with answer choices and explanations.
An autonomic reflex arc differs from a somatic reflex arc by having:
Correct answer:
Explanation: ANS uses a two-neuron chain (preganglionic and postganglionic).
Which structure directly controls autonomic output from the brain?
Correct answer:
Explanation: Hypothalamus is the main ANS control center.
Which brainstem region helps regulate heart rate and breathing?
Correct answer:
Explanation: Medulla controls cardiovascular and respiratory centers.
Which drug type mimics sympathetic activity?
Correct answer:
Explanation: Sympathomimetics mimic fight-or-flight responses.
Which drug blocks parasympathetic activity?
Correct answer:
Explanation: Parasympatholytics inhibit parasympathetic effects.
Which receptor type is blocked by beta blockers?
Correct answer:
Explanation: Beta blockers inhibit beta adrenergic receptors.
Blocking beta1 receptors will cause:
Correct answer:
Explanation: Beta1 increases heart rate; blocking reduces it.
Which receptor type is targeted in asthma treatment?
Correct answer:
Explanation: Beta2 agonists cause bronchodilation.
Which system increases sweating during exercise?
Correct answer:
Explanation: Sympathetic system controls sweating.
Which ANS division is dominant during exercise?
Correct answer:
Explanation: Exercise activates sympathetic responses.
Which ANS division slows gastrointestinal activity?
Correct answer:
Explanation: Sympathetic inhibits digestion.
Which system increases secretion of digestive enzymes?
Correct answer:
Explanation: Parasympathetic stimulates digestion.
Which receptor type decreases intestinal motility?
Correct answer:
Explanation: Beta receptors inhibit GI activity.
Which receptor increases intestinal motility?
Correct answer:
Explanation: Muscarinic receptors increase GI movement.
Which division causes vasoconstriction in skin?
Correct answer:
Explanation: Sympathetic constricts skin vessels.
Which division causes vasodilation in skeletal muscle?
Correct answer:
Explanation: Sympathetic beta2 receptors dilate vessels.
Which ANS division stimulates glucose release from liver?
Correct answer:
Explanation: Sympathetic increases blood glucose.
Which system increases alertness and attention?
Correct answer:
Explanation: Sympathetic prepares the body for action.
Which receptor type is associated with parasympathetic responses?
Correct answer:
Explanation: Muscarinic receptors mediate parasympathetic effects.
Which system is active during sleep?
Correct answer:
Explanation: Parasympathetic dominates during rest.
Which system increases respiratory rate?
Correct answer:
Explanation: Sympathetic increases breathing rate.
Which division decreases urinary bladder contraction?
Correct answer:
Explanation: Sympathetic promotes urine storage.
Which division increases urinary bladder contraction?
Correct answer:
Explanation: Parasympathetic promotes urination.
Which ANS component regulates involuntary smooth muscle?
Correct answer:
Explanation: ANS controls smooth muscle.
Which system affects glandular secretion?
Correct answer:
Explanation: ANS regulates glands.
Which type of muscle is controlled by ANS?
Correct answer:
Explanation: ANS controls smooth and cardiac muscle.
Which system can produce widespread body effects?
Correct answer:
Explanation: Sympathetic has mass activation.
Which division conserves energy after meals?
Correct answer:
Explanation: Parasympathetic supports digestion.
Which division prepares the body for emergency?
Correct answer:
Explanation: Sympathetic activates fight-or-flight.
Which ANS division reduces blood flow to kidneys during stress?
Correct answer:
Explanation: Sympathetic redirects blood to vital organs.