ANS
Terms
undefined, object
copy deck
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ANS
receives input from?
function?
what is it? -
-Receives input from visceral organs
-Makes adjustments to changing conditions
-Innervation of a variety of autonomic functions -
ANS: EFFECTORS
innervates?
consists of? -
-Innervates the CV system, smooth muscle, & glands
-Consists of preganglionic & post ganglionic axons
(Pre=resides in brain or spinal cord & synapses with post which innervate effector organ) -
ANS DIVISIONS
what are they -
SNS(ForF)
PNS(R&D) -
SNS:FIGHT OR FLIGHT
what are the receptors & NTXs involved in preganglionic?
...in post? -
Pre: Receptors (Nicotinic receptors) NTX (Acetylcholine)
Post: Adrenergic, NTX (Norepinephrine) -
PNS: REST & DIGEST
Pre & Post Rec. & NTXs? -
Pre: Rec-Nicotinic , NTX: Acetylcholine
Post: Rec-Muscarinic, NTX: Acetylcholine -
SNS
when is it initiated?
what does it innervate? -
Initiated when energy requirements are high
-Innervates a variety of organ sys. -
SNS : INNERVATED ORGANS
name them -
Eye: Dilation
Sweat Prod: increased
Adrenal Glands: Increased
CV: Increased HR, contractility
Lungs: Brochodilation
GI: Decreased activity
Liver: Increased blood glucose
Kidney: Decreased UO
Penis/Vagina: Ejaculation/Contract'n
BV: Constriction
Blood Coagulation: Increased -
PNS
functions? -
-Keeps energy requirements low
-Involved in many housekeeping activities -
PNS INNERVATIONS:
name them -
Eye: Constriction
Salivary Gland: increased salivation
CV: Decreased HR
Lungs: Brochoconstriction
GI: Increased activity
Liver: Increased blood glucose
Bladder: Increased voiding
Penis/Vagina: Erection/Dilation -
CONTROL OF THE ANS
what 2 organs have the most influence?
What other organs have some influence? -
Brainstem & RAS have most influence
-Pons (exerts some control over resp
-Occularmotor nuclei (pupil size)
-Spinal Cord (exhibits renal & GI cont
-Hypothalamus (coordinates HR, BP, T, H20 Balance, Endocrine functions
-Cortices: remembering fearfulstressful events, thoughts of fav foods, attractive behavior, etc