Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
10 Cards in this Set
- Front
- Back
|
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 |
