(no subject)
Well, no loud sex last night, but I still didn't sleep very well.
I think I was too busy thinking about action potentials and various
membranes and whatnot. How sad is that? I think this is proof that I studied too
much. :-/
Action potential:
Neurotransmitters released into dendrites of another neuron, polls excitatory(yes) or inhibitory(no) "votes," if yes--->Na+ channels are opened, which releases more sodium into the cell and causes an action potential down the axon to the axon terminal. (if no--->Cl-channels are opened, which releases more chlorine into the cell (no action potential).) During rise and fall of action potential, Na+ levels increase and overwhelm the cell, but levels are brought back and forth to equilibrium by the sodium/potassium pump. At the axon terminal, calcium is produced, which stimulates neurotransmitter release into the synapse.
Auditory system:
Sound enters the pinna as vibrating air, stimulates tympanic membrane, which pushes against middle ear bones, which pushes against the oval window, which displaces fluid in the cochlea and the round window, which moves the tectorial membrane, which pushes down on outer hair cells, also pulling the tectorial membrane closer to the inner hair cells, which cause them to bend and open potassium channels, which stimulate release into the auditory nerve, which somehow gets to your auditory cortex. Who the hell knows.
Action potential:
Neurotransmitters released into dendrites of another neuron, polls excitatory(yes) or inhibitory(no) "votes," if yes--->Na+ channels are opened, which releases more sodium into the cell and causes an action potential down the axon to the axon terminal. (if no--->Cl-channels are opened, which releases more chlorine into the cell (no action potential).) During rise and fall of action potential, Na+ levels increase and overwhelm the cell, but levels are brought back and forth to equilibrium by the sodium/potassium pump. At the axon terminal, calcium is produced, which stimulates neurotransmitter release into the synapse.
Auditory system:
Sound enters the pinna as vibrating air, stimulates tympanic membrane, which pushes against middle ear bones, which pushes against the oval window, which displaces fluid in the cochlea and the round window, which moves the tectorial membrane, which pushes down on outer hair cells, also pulling the tectorial membrane closer to the inner hair cells, which cause them to bend and open potassium channels, which stimulate release into the auditory nerve, which somehow gets to your auditory cortex. Who the hell knows.