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Ch, 16- Autonomic Nervous System
vocab
14
Anatomy
Undergraduate 1
07/05/2011

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Term
Autonomic Nervous System
Definition
A motor division of the nervous system that supplies nerves to glands, smooth muscle and cardiac muscle; functions largely without voluntary control
Term
somatic nervous system
Definition
A division of the nervous system that include afferent fibers mainly from the skin, muscles, and skeleton and efferent fibers to the skeletal muscles
Term
afferent
Definition
carrying toward
Term
afferent neurons
Definition
Carry signals toward the CNS
Term
efferent
Definition
carrying away
Term
efferent nerve fiber
Definition
conducts signals away from the CNS
Term
parasympathetic nervous system
Definition
specifically is responsible for stimulation of "rest-and-digest" activities that occur when the body is at rest, including sexual arousal, salivation, lacrimation (tears), urination, digestion and defecation. Contains chiefly cholinergic fibers.
Term
somatic
Definition
Pertaining to the skin, bones and skeletal muscles as opposed to the viscera.
Term
sympathetic nervous system
Definition
the part of the autonomic nervous system that is concerned especially with preparing the body to react to situations of stress or emergency. Contains chiefly adrenergic fibers.
Term
cholinergic fibers
Definition
the parasympathetic fibers that involve acetylcholine.
Term
adrenergic fibers
Definition
The sympathetic postganglionic fibers that secrete norepinephrine.
Term
adrenergic receptors
Definition
receptors for norepinephrine
Term
alpha adrenergic receptors
Definition
Usually have excitatory effects
Term
beta adrenergic receptors
Definition
Usually are inhibitory
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