The striated appearance of skeletal muscle results from
A) transverse tubule pattern.
B) the sarcoplasmic reticulum.
C) cisternae placement.
D) sarcomere arrangement.
E) all of the above

Question

Quizplus · Accepted Answer

The striated appearance of skeletal muscle results from the arrangement of sarcomeres, which are repeating units composed of actin and myosin filaments. This alternating pattern of filaments gives rise to the striated appearance. The transverse tubules and sarcoplasmic reticulum are important structures for muscle contraction, but they do not contribute to the striated appearance. The cisternae are part of the sarcoplasmic reticulum and their placement is important for facilitating calcium release during muscle contraction, but again, they do not contribute to the striated appearance.

The Striated Appearance of Skeletal Muscle Results from