lecture 34 Flashcards
1
Q
excitation contraction coupling
A
motor neuron cause AP
AP release ACh
ACh bind to nitotinic ACh receptor
end plate potential at end plate
AP propagate down fiber
depolarize Ca channel in T tubule
Ca out of SR
conc of Ca inside muscle fiber go way up
Ca bind to troponin binding site
push tropomyosin from binding site of myosin head group
2
Q
twitch
A
contraction of a muscle fiber in response to a single AP
> =100ms apart
3
Q
summation
A
additive effect of several closely spaced twitches
4
Q
recruitment
A
increase in the number of active fiber
5
Q
muscle E
A
ATP
creatine phosphate stick its Pi to ADP to make ATP
respiration
6
Q
glucose
A
glucose stored in muscle fiber as glycogen
blood
