Topics: Skeletal Muscle Anatomy Quiz
When a muscle contracts, the smallest part that contracts is ___________________.
A. Muscle fiber
B. Myofilament
C. Myofibril
D. Sarcomere
Preview next quiz:
A muscle is wrapped in a _____________.
A. Endomysium
B. Perimysium
C. Sarcomysium
D. Epimysium