muscle Flashcards
1
Q
myofibrils
A
form muscle fibers
2
Q
fascicle
A
groups of myofibrils that make up muscle
3
Q
epimysium
A
wraps entire muscle
4
Q
perimysium
A
wraps the fascicles
5
Q
endomysium
A
wraps each individual muscle fiber
6
Q
saccomere
A
segments of myofibrils that contain myofilaments actin and myosin
7
Q
thin filaments
A
actin strands
8
Q
thick filaments
A
myosin strands
9
Q
insertion point
A
when a muscle contracts, its the bone that moves
10
Q
origin
A
the bone that does not move
11
Q
prime movers/agonist muscle
A
muscles mainly responsible for producing a certain movement
12
Q
anatagonist muscles
A
work in reverse of a particular movement
13
Q
synergists
A
help the prime movers and stabilize joints against dislocation
14
Q
motor unit
A
group of muscle fibers that all get their signalsfrom the same single motor neuron
15
Q
3 steps of twitch movement
A
- latent period
- period of contraction
- period of relaxation
