Kaplan Nursing Entrance Exam Practice 2025 – Comprehensive Prep

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What type of muscle has fibers that are multinucleated and visible striations?

Cardiac muscle

Skeletal muscle

The type of muscle that has fibers which are multinucleated and exhibit visible striations is skeletal muscle. Skeletal muscle fibers are long and cylindrical, containing multiple nuclei located along the periphery of the cells. The presence of striations is due to the highly organized arrangement of myofilaments (actin and myosin) within the muscle fibers, creating a banding pattern that is characteristic of skeletal muscle.

Cardiac muscle, while it does have striations, is not multinucleated in the same manner; it typically has one or two centrally located nuclei per cell and is structured differently to facilitate its function in the heart. Smooth muscle, on the other hand, lacks both striations and multinucleation, consisting of single, centrally located nuclei in a spindle-shaped configuration.

Thus, the distinct features of skeletal muscle—specifically the multinucleation and visible striations—are what define it uniquely amongst the three types of muscle tissue.

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Smooth muscle

All of the above

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