ANS (Autonomic Nervous System) Mastering Questions

Which of the following does NOT describe the ANS?

a system of motor neurons that innervates all muscle cells.

The somatic and autonomic nervous systems differ in all of the following EXCEPT

regulation of activity by higher brain centers.

Which of these effectors is NOT directly controlled by the autonomic nervous system?

Skeletal muscle.

Autonomic ganglia contain

the cell bodies of motor neurons

Preparing the body for the "fight-or-flight" response is the role of the

sympathetic division

The "fight or flight" division of the autonomic nervous system is the

Sympathetic division

Which of the following is mismatched?

parasympathetic postganglionic fibers; release NE

The secretions of the adrenal medulla act to supplement the effects of

sympathetic stimulation

Which of the following statements is FALSE?

Sympathetic origin is craniosacral; parasympathetic is thoracolumbar.

Sympathetic nerves may leave the spinal cord at which vertebra?

first thoracic

Fibers that enter and leave the sympathetic trunks without synapsing form structures called

splanchnic nerves

Once a sympathetic preganglionic axon reaches a trunk ganglion, it can do all of the following EXCEPT

synapse with a parasympathetic neuron in the same trunk ganglion

Which sympathetic fibers form a splanchnic nerve?

those that pass through the trunk ganglion to synapse in collateral or prevertebral ganglia

Where would you NOT find autonomic ganglia?

within spinal cord

Visceral reflex arcs differ from somatic in that

visceral arcs involve two motor neurons

Where would you NOT find a cholinergeric nicotinic receptor?

all parasympathetic target organs

Drugs called beta-blockers

decrease heart rate and blood pressure

Which of the following adrenergic neurotransmitter receptors plays the major role in heart activity?

beta 1

The mushroom poison muscarine can bind to receptors on

all effector cells stimulated by postganglionic cholinergic fibers

Which of the following drug classes would be useful for smoking cessation products?

nicotinic agents

Which type of drug would be useful in dilating the pupils for an examination of the retina?

muscarinic receptor inhibitor

Which of the following is a function of the parasympathetic division?

contracts smooth muscle of the bladder wall and relaxes urethral sphincter

Which of the following is NOT a result of parasympathetic stimulation?

dilation of the pupils

Sympathetic responses generally are widespread because

NE and epinephrine are secreted into the blood as part of the sympathetic response.

The parasympathetic tone

determines normal activity of the urinary tract

Erection (vasodilation) of the penis or clitoris

is primarily under parasympathetic control

Which is an exclusively sympathetic function?

regulation of body temperature

Sympathetic division stimulation causes

increased blood glucose, decreased GI peristalsis, and increased heart rate and blood pressure

Parasympathetic functions include

lens accommodation for close vision

A mugger steals your wallet causing all of the following to happen EXCEPT

increased glucose uptake to the liver from blood

Which of the following is mismatched?

promotes urination; sympathetic

Which target organ receives dual innervation?

Small intestine

Raynaud's disease

is characterized by exaggerated vasoconstriction in the extremities.

Which of the following is NOT true about hypertension?

Disorder of the parasympathetic division of the ANS.

The parasympathetic ganglion that serves the lacrimal gland and nasal mucosa is the

pterygopalatine ganglion

Over 90% of all parasympathetic fibers are derived from cranial nerve

X (vagus)

The parasympathetic fibers of the ________ nerve stimulate many large glands in the head such as the nasal and lacrimal glands

facial (VII)

Which of the following is NOT a plexus of the vagus (X) nerve?

inferior hypogastric

The smooth muscle of the digestive viscera is served largely by the

vagus (X) nerves

The route of major parasympathetic outflow from the head is via the

vagus (X) nerves