Question

an example of a skeletal muscle working occurs when a person ______. a. perspires heavily b. digests food c. takes a breath d. stands up please select the best answer from the choices provided.

Explanation:

• Option A: Perspiring heavily involves sweat glands (exocrine system), not skeletal muscles.
• Option B: Digesting food is done by smooth muscles in the digestive tract, not skeletal muscles.
• Option C: Breathing involves mainly smooth (diaphragm is skeletal but "taking a breath" as a general action has more smooth muscle involvement in airways and some skeletal in diaphragm, but less direct for skeletal muscle work compared to standing).
• Option D: Standing up requires skeletal muscles (like leg and core muscles) to contract and support the body against gravity, showing skeletal muscle work.

Answer:

D. stands up