Autonomics Flashcards Preview

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Flashcards in Autonomics Deck (10):
1

what does the autonomic nervous system regulate

-contraction and relaxation of smooth muscle
-all exocrine and certain endocrine secretions
-heartbeat
-certain steps in intermediary metabolism

2

what is the predominant factor for rate in the heart

the parasympathetic system

3

control of BP is mainly by what system

sympathetic system

4

where are the muscarinic receptors

M1: ganglia
M2: heart and presynaptic nerve terminals
M3: SM, sweat glands, vascular endothelium

5

adrenergic receptors for liver and what is its effect

alpha 1 and beta 2
increase in gluconeogenesis and glycogenolysis

6

adrenergic receptors for adipocytes and its effect

alpha 2 to inhibit lipolysis
beta 3 to increase lipolysis

7

significance of beta 1 receptors -- location and effect

heart -- increase HR and contractility
juxtoglomerular cells - increase renin release

8

what adrenergic receptors work on pancreatic islets and its effects

beta 2 -- on alpha cells it increases glucagon secretion and on beta cells it increase insulin secretion

alpha 2 - on beta cells it inhibits insulin secretion

9

what adrenergic receptors work on skeletal muscles

beta 2 -- it increase glycogenolysis

10

what is the location and effect of alpha 1 adrenergic receptor

relaxation of GI /intestinal SM
contraction of vascular and genitourinary system
liver - increase glycogenolysis and gluconeogenesis

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