What creates the alternating light and dark bands that provides the striation pattern on skeletal muscle tissue?
A) sarcoplasm and sarcolemma
B) thick filaments and myosin heads
C) A bands and I bands
D) H zones and M lines
E) Z discs and H zones

Question

Quizplus · Accepted Answer

The alternating light and dark bands that provide the striation pattern on skeletal muscle tissue are created by the arrangement of A bands (dark bands) and I bands (light bands) along the length of the muscle fibers. The A bands are composed of thick filaments containing myosin heads, while the I bands contain thin filaments of actin, troponin, and tropomyosin. As the muscle contracts, the overlapping of these filaments causes the bands to appear to shorten and create the movement of the muscle.

What Creates the Alternating Light and Dark Bands That Provides