Muscular System Quiz

What is the primary function of the muscular system?

• Movement

• Support

• Generation of body heat

• Digestion

List the 3 types of muscles?

• Smooth, skeletal, cardiac

• Rough, skeletal, circular

• Smooth, bony, cardiac

• Smooth, skeletal, cuboidal

What is a characteristic feature of smooth muscle cells?

• They have striations

• They are multinucleated

• They are spindle-shaped with centrally located nuclei

• They are innervated by spinal or cranial nerves

Cardiac muscle cells are unique because they have:

• Intercalated disks

• Multiple nuclei at the periphery of cells

• Filaments arranged in order

• No central nucleus

What is the appearance of skeletal muscle cells?

• Smooth

• Striated

• Circular

• Spindle-shaped

Which type of muscle contains cells with the highest myoglobin and mitochondria content?

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

• Red or dark muscle fibers

What is the primary function of muscles?

• To contract or shorten

• To elongate or stretch

• To calcify or harden

• To liquefy or soften

Skeletal muscle fibers are characterized by which of the following?

• They branch or anastomose

• They run the length of the muscle with which they are a part

• They are arranged circularly

• They are discrete cells or clusters of cells

Which type of muscle fibers have the lowest myoglobin and mitochondria content?

• Red fibers

• Intermediate fibers

• White or pale fibers

• All fibers have the same content

Flexors are muscles that are located on the side of the limb towards which the joint ________.

• Increases

• Decreases

• Does not change

• Rotates