A&P Quiz 16
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
