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Unformatted text preview: Beta 2 receptors-activated= relaxations Skeletal muscle blood vessels: B2 & A1 (epinephrine acts of B2) *epinephrine- B2 (80%) dilate and increase blood flow *norepinephrine- NO B2 (20%) SYMP: regulates blood flow/ vessels GENITALIA: para- dilation of penis(errection) ACh- acts on endothelium cells ACH RELEASES NO-leads to production of NO-NO causes relaxation (dilates)-acts with cyclic GMP exception: both symp and para BLADDER smooth muscle: *detrusor muscle (sac)-para releases ACh to contract (pee)-sym relaxes (not pee) *internal sphincter skeletal muscle *external sphinter all symp= ACh all parasym: musculenic receptor *usually release secretions GI TRACT PARASYM: causes food to travel throughout the stomach increase secretions SYMP: causes relaxation of walls LOOK at CHART SWEAT GLANDS 1. eccrine: thermoregulatory (on skin-odor)-symp-ACh 2. apocrine: stress (arm-pit)-symp-no ACh Parasym: secretions CHARTS: SYM then PARA Alpha1 - excitatory Beta 2- inhibitory M2...
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- Fall '10
- ganglionic parasympathetic -causes, ganglionic sympathetic -constriction, myosis *radial muscle