Striated muscles are so-called because of a repeating pattern of light and dark bands.One repeating unit of the banding pattern is called a
A) myofilament.
B) myomere.
C) sarcofibril.
D) sarcomere.
E) crossbridge.

Question

Quizplus · Accepted Answer

The repeating unit in the banding pattern of striated muscles is called a sarcomere. Sarcomeres consist of overlapping myosin and actin filaments, which are responsible for muscle contraction. Therefore, choice D, sarcomere, is the best answer. Myofilament (choice A) and sarcofibril (choice C) are not specific to the banding pattern of striated muscles, and myomere (choice B) refers to a segment of muscle tissue found in fish. Crossbridge (choice E) refers to the interaction between myosin and actin filaments within a sarcomere.

Striated Muscles Are So-Called Because of a Repeating Pattern of Light