Ch. 16
Preganglionic neurons of the autonomic nervous system are located in
. the brain.B. the lateral gray horns of the spinal cord.
Each of the following effects is associated with the action if postganglionic sympathetic fibers, except
Decreased heart rate
Stimulation of adrenergic receptors by norepinephrine results in
Release of calcium ions from intracellular stores
In general, autonomic tone of peripheral blood vessel increase when
Sympathetic stimulation is increased
The statement "it controls the diameter of the pupil is"
True for Both the parasympathetic and sympathetic nervous system
Almost 75% of all parasympathetic outflow travels along the
Vagus nerve
Postganglionic sympathetic axons release the neurotransmitter _ at their effects
acetylcholine or nitric oxide or norepinephrine
Ganglionic neurons innervate such thing as
any of the above
Dual innervation refers to an organ receiving
both sympathetic and parasympathetic innervation
Preganglionic fibers leave the CNS and then synapse on
ganglionic neurons
In general, parasympathetic fibers are _ and postganglionic fibers are _.
long; short
Sweat glands contain _ receptors
muscarinic cholinergic
The _ division of the autonomic nervous system is said to function during rest and digest
parasympathetic
Ganglionic neurons in the suprarenal gland
release epinephrine into blood capillaries
Specialized ganglionic sympathetic neurons that release hormones into the bloodstream are found within the
suprarenal glands
Postganglionic fibers that innervate targets in the body wall or thoracic cavity originate on neurons on
sympathetic chain ganglia
The statement ganglia are usually near or within the end organ is
true only for parasympathetic nervous system
The statement it initiates contraction of urinary bladder smooth muscle is
true only for the parasympathetic nervous system
Postganglionic axons usually are
unmilenated