CNS control autonomics lecture Flashcards
sympathetic
fight or flight response
How does the sympathetic nervous system affect the heart
increases heart rate and force of contraction
How does the sympathetic nervous system affect blood vessels
skin and organs constrict
muscles and heart dilate
How does the sympathetic nervous system affect the lungs
bronchodilation (opens lungs to increase air flow)
inhibits mucus secretion
How does the sympathetic nervous system affect the GI tract
relaxes and cessation of digestion
How does the sympathetic nervous system affect fat
lipolysis (breaks down fatty acids to mobilize stored energy)
How does the sympathetic nervous system affect the exocrine glands
increases sweat and salivary mucus
How does the sympathetic nervous system affect the pupils
dilate for distance vision
How does the sympathetic nervous system affect the endocrine glands
decreased insulin, increased glucagon, epinephrine, and norepinephrine
(increases blood sugar)
is thermoregulation parasympathetic or sympathetic
sympathetic ONLY
How does the parasympathetic nervous system affect the heart
decreased rate
How does the parasympathetic nervous system affect blood vessels
dilation to reproductive organs only
How does the parasympathetic nervous system affect the lungs
bronchiolar constriction and stimulation of mucus secretion
How does the parasympathetic nervous system affect the GI tract
improves movement and motility
How does the parasympathetic nervous system affect the pancreas
increases insulin or glucagon in a case by case basis
what does increasing insulin do
puts glucose into the cells
what does increasing glucagon do
takes glucose out of the cells
sympathetic pre vs postganglionic fibers
pre: SHORT fiber- releases ACh to nicotinic receptors
post: LONG fiber- norepinephrine (adrenergic receptors-alpha and beta) and ACh (M3 muscarinic)
parasympathetic pre vs postganglionic fibers
pre: LONG fiber- releases ACh to nicotinic receptors
post: SHORT fiber -ACh to Muscarinic
alpha 1 receptor
