What Is a Fascicle of a Skeletal Muscle

question 8

Multiple Choice

What is a fascicle of a skeletal muscle?

• A)A layer of connective tissue surrounding an entire skeletal muscle
• B)A contractile unit of a myofibril
• C)An inward extension of the sarcolemma through the muscle fiber
• D)A bundle of skeletal muscle fibers
• E)A motor neuron and all of the muscle fibers that it innervates

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Definitions:

Cytokinesis

The final stage of cell division, where the cytoplasm of a single cell is divided into two daughter cells.

Cell Plate

The structure that forms during cytokinesis in plants, separating the two daughter cells produced by mitosis.

Plant Cells

Basic units of life in organisms of the kingdom Plantae, characterized by a rigid cell wall, chloroplasts, and central vacuoles.

Cyclins

Regulatory proteins whose levels oscillate during the cell cycle; cyclins associate with cyclin-dependent kinases to form cyclin-Cdk complexes.