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function of ans
ensure involutary organs funtion at an appropriate level for current conditions
cranial nerve 3
constricts iris and focuses the cilary muscle for near vision
cranial nerve 7 and 9
salivary glands increase secretion
lacramil glands increase secretion
blood vessels dialate
cranial nerve 10
heart rate slows
: contraction intensity decreases, coronary vessels constrict
lung rate slows
: airways constrict and pulmonary vessels constrict
liver bile secretion increases
smooth muscle contraction increases
blood vessels dialate
stomach secretion increases
smooth muscle contraction
blood vessels dialate
anus secretion increases
increase muscle contraction
sphinctor muscles relax
uterus
uterine vessels dialate
genatillia
arterioles dialate and venules constrict
parasympathetic
preganglionic cell body
located in the brainstem or sacral segment 2-4 of the lateral horn
parasympatheic preganglionic fiber
located in cranial nerves 3 7 9 10 or sacral nerves
long
parasympathetic postganglionic fiber
located within or close to the innvervated organ (short)
sympathetic preganglionic cell bodies
located in the thoracic and lumbar segments
sympathetic postganglonic cell body
found in sympathetic chain or paravertebral ganglia
sympathetic
skin
sweat gland secretion increases
arrector pilli muscle contracts
adipose is broken down
blood vessels constrict to diver blood to muscles
sympathetic skeletal muscle
blood vessels dialte
sympathetic
liver/ galbladder
bile secretion decreases
smooth muscle relaxes
blood vessels constrict
sympathetic
digestive organs
secretion decreases
smooth muscle relaxes
blood vessels constrict
sympathetic
urinary system
smooth muscle reaxes
blood vesses constrict
sphnctors constrict
sympathetic uterus
blood vessels constrict
sympatheic
genitalia
smooth muscle
: ejaculation
arteroles constrict and venules dialate
Author
andreathors16
ID
112241
Card Set
ANS
Description
anatomy
Updated
2011-10-26T03:14:15Z
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