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