BIO 365S Lecture Notes - Lecture 15: Adrenergic Receptor, Vasopressin, Motor Neuron
Control center stays in more original brain areas: brain stem and
hypothalamus (in here, has a lot of groups of neurons that release
neural hormones and has a lot of receptors which sense your
temperature/body temp is set by hypothalamus, osmolarity (if not
happy, will release vasopressin/ADH to go to kidney and control water
reabsorption, controls eating behavior feeling hungry or full ; All
autonomic controls release to hypothalamus).
Brain stem has some control centers, like RPC which only stays there
with a bunch of neurons but hypothalamus is the main control.
Body ill atiate eery syste it a to do the jo, ad do’t are
what system fixes the problem.
When severely dehydrated, has sensory input go to cortex, limbic
system (affect emotion) to trigger behavioral response to look for
water. Once put water in, will dilute body solution and your body is
happy. Before finding water, body does some response via
hypothalamic sensor = go to pons, medulla, hypothalamus and release
vasopressin (endocrine response, to conserve water) along with
vasoconstriction by autonomic response (TBW starts to decrease,
affetig BP so ot good eause a’t pup lood to orga ad a’t
maintain constant filter rate in kidney; vasoconstriction = sympathetic,
bids ith alpha reeptor to rig BP ak). Body does’t are hih
one works, just will activate a lot of pathways.
Autonomic triggers norepinephrine release:
Autonomic neurons extend out, inside axon has varicosity. When
action potential comes, triggers Ca2+ channel to open for calcium to
flow in and trigger NE to release, and simple diffusion will be enough to
move short distance and bind with adrenergic receptor (GPCR) to
trigger response in target cell. Either NE gets sent back to do it again or
cut from the cycle.
Motor neurons = can contract. In the muscle part, muscle membrane
find more resources at oneclass.com
find more resources at oneclass.com
