The contractile unit of a skeletal muscle fiber is a(n) ____.
A) myofibril
B) sarcomere
C) myosin filament
D) actin filament
E) Z line

Name: The contractile unit of a skeletal muscle fiber is a(n) ____. A) myofibril B) sarcomere C) myosin filament D) actin filament E) Z line
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Question

​The contractile unit of a skeletal muscle fiber is a(n) ____.
A) ​myofibril
B) ​sarcomere
C) ​myosin filament
D) ​actin filament
E) ​Z line

Quizplus · Accepted Answer

The sarcomere is the contractile unit of a skeletal muscle fiber, consisting of the segment of the myofibril between two adjacent Z lines. It is the basic unit of muscle contraction.

​The Contractile Unit of a Skeletal Muscle Fiber Is A(n)

The Contractile Unit of a Skeletal Muscle Fiber Is A(n)