Ch. 12 and 13 Neuropharmacology and PNS Physiology Flashcards
Functions of the parasympathetic nervous system
slowing of HR, increased gastric secretion, emptying of bladder and bowel, constricting of pupil, focusing of eye for near vision, contracting bronchial smooth muscle
Functions of sympathetic nervous system
regulation of body temperature, cardiovascular system, fight-or-flight response
What happens to the body during fight or flight?
dilating pupils to increase visual acuity, increased BP and HR, dilating of bronchi to improve oxygenation, mobilizing stored energy, shunting blood into the skeletal muscles
The adrenal medulla influences the body and causes effects by releasing ________
epinephrine
__________ is the transmitter employed at most junctions of the PNS
acetylcholine
Subtypes of cholinergic receptors
muscarinic, nicotinic M, nicotinic N
Subtypes of adrenergic receptors
A1 A2 B1 B2
Functions of A1
pupil dilation, ejaculation, contraction of bladder muscles and prostatic capsule
Functions of A2
regulate transmitter release
Functions of B1
increases HR, force of contraction, release of renin, BP elevation
Functions of B2
bronchodilation, relaxation of uterine smooth muscle, vasodilation, glycogenolysis, enhances skeletal muscle contraction
Functions of dopamine receptors
dilates renal blood vessels
Functions of nicotinic N
stimulation of parasympathetic and sympathetic postganglionic nerves and release of epinephrine from the adrenal medulla
Functions of nicotinic M
act at neuromuscular junction and cause contraction of skeletal muscle
Functions of Muscarinic receptor subtypes
(parasympathetic acting on the eye, heart, lung, bladder, GI, BV, sex organs, sweat glands) decreased pupil size, focus for near vision, increased HR, increased lung secretions, bronchoconstriction, makes you pee and poop, increased sweating, erection, vasodilation
