A&P Quiz 16

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The ________ division of the autonomic nervous system is said to function during "rest and digest."

parasympathetic

In which system are the ganglia in or near the target organ?

parasympathetic division of the ANS

Ganglionic neurons innervate all of the following

-glands. -smooth muscle. -adipose tissue. -cardiac muscle.

Parasympathetic functions include all of the following

-stimulation of urination -constriction of the pupils -stimulation of defecation -decrease in the rate of cardiac contraction

Parasympathetic effects are localized and short-lived because

acetylcholine is inactivated at the synapse by acetylcholinesterase.

Autonomic tone is an important aspect of ANS function because it

allows ANS neurons to increase or decrease their activity, providing a range of control options

Regarding the sympathetic nervous system, the neurotransmitter ACh is

always excitatory when used in the synapses of the sympathetic nervous system

The adrenal medullae secrete

both epinephrine and norepinephrine

Dual innervation refers to an organ receiving

both sympathetic and parasympathetic innervation

Clusters of ganglionic sympathetic neurons that innervate organs in the abdominopelvic region are called ________ ganglia.

collateral

The parasympathetic division of the ANS is also known as which of the following?

craniosacral division

Stimulation of the beta receptors on heart muscle cells results in

increased heart rate and force of contraction

Sympathetic preganglionic fibers are ________ and have ________ axons.

short; myelinated

Which of the following is a parasympathetic ganglion

submandibular otic ciliary pterygopalatine

A pedestrian narrowly avoids being hit by an oncoming car. He notices that it takes a little while for his heart rate and respiratory rate to return to normal. This is likely because

sympathetic activation of the adrenal medulla has released epinephrine and norepinephrine into the bloodstream

The sympathetic division of the ANS is also known as which of the following?

thoracolumbar division

Almost 75 percent of all parasympathetic outflow travels along the ________ nerve(s).

vagus


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