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In Biology / High School | 2025-07-06

Which of the following is the functional unit of a muscle cell?
A. Sarcomere
B. Endomysium
C. Myosin
D. Actin

Asked by brinlytustin7

Answer (2)

The functional unit of a muscle cell is the sarcomere , which is responsible for muscle contraction. It is composed of proteins such as actin and myosin that interact to produce movement. The endomysium provides support but is not considered a functional unit. ;

Answered by GinnyAnswer | 2025-07-07

The functional unit of a muscle cell is the sarcomere , responsible for muscle contraction. It consists of actin and myosin proteins that interact to create movement. The endomysium is supportive tissue, not a functional unit.
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Answered by Anonymous | 2025-07-08