BIOL460 - EXAM 3 QUESTIONS AND ANSWERS WITH
COMPLETE SOLUTIONS VERIFIED
sympathetic function
fight or flight
norepinephrine
postganglionic neurons
norepinephrine and epinephrine
adrenal medulla
effects of sympathetic
increased HR, increased blood glucose, blood to skeletal muscles
parasympathetic
rest and digest
acetylcholine
released from postganglionic neurons
effects of parasympathetic
decrease heart rate, increase digestive activity, dilate visceral blood vessels
adrenergic
adrenaline (NE + E)
cholinergic
acetylcholine
ALL preganglionic neurons
, Ach = NT (sympathetic + parasympathetic) = chiolinergic
adrenergic stimulation
heart, dilating muscles of iris, smooth muscle of blood vessels (vasoconstriction)
adrenergic inhibition
inhibition in bronchioles in lungs (bronchodilation) and blood vessels (vasodilation)
adrenergic receptors
more sensitive to NE (still responds to E)
alpha 1 receptor
vascular smooth muscle of skin and viscera
alpha 1 receptor effects
generates EPSP = vasoconstriction --> decreased blood flow, quesy and dry mouth
alpha 2 receptor
on terminal boutons of sympathetic postganglionic neurons
alpha 2 receptor effects
negative feedback mechanism (NE), slows release of NE, in brain, lowers blood
pressure
beta adrenergic receptors
more sensitive to E (still responds to NE)
beta 1 receptors
heart
effects of beta 1 receptors
generates EPSP, increase heart rate and contractility
beta 2 receptor
COMPLETE SOLUTIONS VERIFIED
sympathetic function
fight or flight
norepinephrine
postganglionic neurons
norepinephrine and epinephrine
adrenal medulla
effects of sympathetic
increased HR, increased blood glucose, blood to skeletal muscles
parasympathetic
rest and digest
acetylcholine
released from postganglionic neurons
effects of parasympathetic
decrease heart rate, increase digestive activity, dilate visceral blood vessels
adrenergic
adrenaline (NE + E)
cholinergic
acetylcholine
ALL preganglionic neurons
, Ach = NT (sympathetic + parasympathetic) = chiolinergic
adrenergic stimulation
heart, dilating muscles of iris, smooth muscle of blood vessels (vasoconstriction)
adrenergic inhibition
inhibition in bronchioles in lungs (bronchodilation) and blood vessels (vasodilation)
adrenergic receptors
more sensitive to NE (still responds to E)
alpha 1 receptor
vascular smooth muscle of skin and viscera
alpha 1 receptor effects
generates EPSP = vasoconstriction --> decreased blood flow, quesy and dry mouth
alpha 2 receptor
on terminal boutons of sympathetic postganglionic neurons
alpha 2 receptor effects
negative feedback mechanism (NE), slows release of NE, in brain, lowers blood
pressure
beta adrenergic receptors
more sensitive to E (still responds to NE)
beta 1 receptors
heart
effects of beta 1 receptors
generates EPSP, increase heart rate and contractility
beta 2 receptor
