Question

skeletal muscles are...
the muscles that line the walls of the heart.
the muscles that line hollow organs, like the stomach.
the muscles that line blood vessels.
the muscles attached to bones.

Explanation:

To determine the correct answer, we analyze each option:

• The first option describes cardiac muscles (heart walls), not skeletal.
• The second and third options describe smooth muscles (lining hollow organs, blood vessels).
• Skeletal muscles are striated, voluntary, and attached to bones via tendons, matching the fourth option.

Answer:

D. the muscles attached to bones. (Note: Assuming the options are labeled A, B, C, D in order, the correct one is the last option: "the muscles attached to bones".)