sarcolema- depolarization Flashcards
1
Q
ACH
A
makes sarcolemma very permeable to Na+ions
2
Q
Na+ ions
A
rush into cell
3
Q
depolarization
A
reversal of charges on the sarcolemma
4
Q
during depolarization
A
outside is negative inside in positive
5
Q
cholinesterase at sarcolemma
A
inactivates ACH
6
Q
ACH diffuses across the synapse and
A
bonds to ACH receptors on the sarcolemma
7
Q
depolarization generates
A
an electrical impulse (action potential)
8
Q
action potential
A
spreads along the entire sarcolemma of the muscle fiber
9
Q
sarcolemma has
A
inward folds called transverse tubules
10
Q
T tubules
A
carry action potential to inferior of muscle cell
11
Q
depolarization initiates changes within
A
cell that causes contraction
12
Q
contraction is followed by
A
repolorization
