Bundles of actin and myosin filaments form structures called ________.
A) myofibrils
B) sarcoplasm
C) aponeuroses
D) fascicles
E) transverse tubules

Question

Quizplus · Accepted Answer

Myofibrils are composed of bundles of actin and myosin filaments, and are the contractile elements of skeletal muscle fibers. Sarcoplasm refers to the cytoplasm of a muscle fiber, aponeuroses are sheet-like structures that connect muscles to bones or other muscles, fascicles are bundles of muscle fibers, and transverse tubules are invaginations of the muscle cell membrane that allow for the transmission of electrical impulses.

Bundles of Actin and Myosin Filaments Form Structures Called ________