Thick Myofilaments Extend the Length of The

Question

Thick myofilaments extend the length of the:
A)A-band.
B)Z-line.
C)I-band.
D)None of the above are correct.

Accepted Answer

Thick myofilaments refer to myosin filaments, which extend the length of the A-band in a sarcomere. The Z-line defines the boundaries of the sarcomere, while the I-band contains only thin myofilaments (actin filaments). Therefore, choice A is the most accurate answer.