autonomic nervous system Flashcards
sympathetic system
what spinal nerves, where are ganglia located?
thoracic & lumbar
closer to CNS
parasympathetic system
what spinal nerves, where are ganglia located?
cranial, sacral
closer to organs
dorsal vs ventral stream
dorsal: sensory info in
ventral: motor info away
adrenal gland
sympathetic post ganglia collection of neurons
mass activation
functions when sympathetic is activated
blood vessel constriction, increase HR, relax airways, inhibit digestion, stim. glucose production, adrenaline secretion, salivation & sweating
functions when parasympathetic is activated
decrease HR, constrict airways, stimulate digestion
mostly reciprocal effects
sympathetic post ganglionic NT
NA
increased NA to a blood vessel does what?
constriction
carotid sinus
when lying down -> stand up, blood flows down
carotid -> info about blood flow to brain to compensate
where does blood flow increase to during exercise?
heart, skeletal muscle, skin
Where in brain is Sympathetic activity controlled?
medulla (RVLM - rostroventrallateral)