The figure illustrates the parasympathetic division. What does "A" represent?
The figure illustrates the parasympathetic division. What does "C" represent?
The figure illustrates the parasympathetic division. What does "E" represent?
effects more localized
increases activity of GI tract
effects are short-lived
provides more extensive innervation of G.I. Tract
functions at rest
effects are more general
can produce widespread sweating
has greater influence during physical activity
inhibits heart rate but stimulates contraction of urinary bladder stimulation of this system often activates many effectors at the same time release of epinephrine and norepinephrine
provides innervation to blood vessels in skeletal muscles
The celiac ganglion is one of the three main _________ ganglia.
Axons from preganglionic neurons of the parasympathetic division synapse with _________ ganglia.
In the sympathetic division of the ANS,
the preganglionic cell body is located in the lateral horn of the spinal cord. The parasympathetic nervous system is characterized by
short postganglionic axons near the organs they innervate.
The sympathetic and parasympathetic divisions of the ANS differ in the
length of the preganglionic and postganglionic axons, location of the preganglionic cell bodies, and position of the ganglia where preganglionic and postganglionic neurons synapse. Sympathetic fibers leave the spinal cord in the
thoracic and lumbar regions.
Axons exit the sympathetic chain ganglia by all of the following except
Sympathetic preganglionic axons
can synapse in either chain or collateral ganglia.
Sympathetic stimulation of the postganglionic cells of the adrenal medulla causes the release of
epinephrine and norepinephrine.
The vagus nerve carries parasympathetic impulses to the
thoracic and abdominal viscera.
Which of the following nerves has parasympathetic axons?
Which of the following cranial nerves does NOT carry parasympathetic fibers?
Stimulation of the iris by parasympathetic nerves stimulates pupillary constriction. True
The _____________ has both a1 and b1 receptors and responds to sympathoadrenal stimulation with glycogenolysis and secretion of glucose.
Blocking β2-adrenergic receptors prevents airway
Muscarinic antagonists stimulate _____________ pupillary diameter.
The major regulatory center of the autonomic system is, according to many scientists, the ______________ since this brain region has functions, such as control of body temperature, that require appropriate activation of sympathetic and parasympathetic nerves.
Propanolol, a beta-blocker, is typically used to
decrease heart rate.
Muscarinic receptors bind
Sympathetic effects tend to last ___ than parasympathetic effect. One reason is that ___.
longer; norepinephrine can diffuse into the bloodstream without being broken down The cell bodies of parasympathetic preganglionic neurons are located either within the________ or the ________.
brainstem, lateral gray matter in the sacral region of the spinal cord The splanchnic nerves synapse in the
The preganglionic cell bodies of the sympathetic division of the ANS are located in the __________.
a. lateral gray matter between the T1 and L2 vertebrae
The cell bodies of parasympathetic preganglionic neurons are located either within the________ or the ________.
brainstem, lateral gray matter in the sacral region of the spinal cord If a single structure receives innervation from both the sympathetic and parasympathetic divisions of the ANS, it is called ________ innervation, and the effects of both divisions on that single structure...
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