Myofibrils Flashcards
1
Q
What is the I-band in a myofibril?
A
The actin filaments
2
Q
What is the A-band in a myofibril?
A
The actin and myosin filaments
3
Q
What is the Z-line in a myofibril?
A
The end of the sarcomere
4
Q
What is the M-line in a myofibril?
A
The middle of the myosin filaments
5
Q
What is the H-zone in a myofibril?
A
The part that only contains myosin filaments
6
Q
During muscle contraction, which bands/zones get smaller in length?
A
The I-band and the H-zone
7
Q
During muscle contraction, which band/zone stays the same length?
A
The A-band
8
Q
During muscle contraction, do the actin and myosin filaments get smaller?
A
No, they stay the same length
