muscle unit quiz (drawings) Flashcards
1
Q
thick bands
A
myosin
2
Q
thin bands
A
actin
3
Q
I band
A
light band
4
Q
A band
A
dark band
5
Q
goes through myosin, three lines
A
M line
6
Q
separates myosin, actin is attached
A
z disks
7
Q
three lines in the middle of myosin
A
H zone
8
Q
runs from z disks to z disks
A
sarcomere
9
Q
structure that shows actin and myosin
A
myofibril
10
Q
Never impulse –> axon terminal
A
step 1
11
Q
calcium channels open to let Ca 2+ in
A
step 2
12
Q
calcium pushes vesicles to synaptic cleft
A
step 3
13
Q
ACH diffuses across sympatric cleft and attaches to receptors
A
step 4
14
Q
sarcolemma becomes slightly permeable + Na + enters
A
step 5
15
Q
depolarization creates more Na+ channels to open
A
step 6
