How Muscles Contract Flashcards
1
Q
Muscle tissue accounts for about _ body’s total mass
A
Half
2
Q
_ made up of an actin and myosin protein
A
Myofibrils
3
Q
Sarcomere is a _
A
Segment of Myofibrils
4
Q
_ is smallest functional unit of muscle
A
Sarcomere
5
Q
Muscle cells _ times diameter of normal cells
A
10
6
Q
_ make up majority of muscle volume
A
Myofibrils
7
Q
_ anchors thin filaments and connects successive Myofibrils
A
Z bands
8
Q
Actin is _ myosin is _
A
Thin filament
Thick filament
9
Q
Energy provided by _
A
Glycogen
10
Q
Glycogen is stored in _
A
Muscles
11
Q
_ released by nerve endings and aligns on special receptive areas in the muscle
A
Acetylcholine
12
Q
As long as acetylcholine present in areas, muscle _
A
Remains contracted
13
Q
A
