an example of a skeletal muscle working occurs when a person ______. a. perspires heavily b. digests food c…
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. a b c d
Answer
Brief Explanations:
- Option A: Perspiring heavily is related to the excretory system (sweat glands) and thermoregulation, not skeletal muscle work.
- Option B: Digesting food involves smooth muscles in the digestive tract, not skeletal muscles.
- Option C: Breathing (taking a breath) primarily uses smooth (diaphragm, intercostal muscles have both smooth and skeletal, but the main respiratory muscles for quiet breathing are smooth - like diaphragm, and intercostal muscles are skeletal but the act of normal breathing is more about smooth muscle control in a way, but standing up is a clearer skeletal muscle action). Wait, actually, intercostal muscles and diaphragm: diaphragm is a skeletal muscle? Wait, no, diaphragm is a skeletal muscle? Wait, diaphragm is a skeletal muscle? Wait, diaphragm is a striated muscle, so skeletal? Wait, no, diaphragm is a skeletal muscle? Wait, actually, the diaphragm is a skeletal muscle (striated, voluntary in some aspects). But taking a breath: the main muscle is diaphragm (skeletal) and intercostal muscles (skeletal). But standing up: when a person stands up, skeletal muscles (like leg muscles, back muscles) contract to move the bones, which is a classic example of skeletal muscle (voluntary, attached to bones) working.
- Option D: Standing up requires skeletal muscles (e.g., leg muscles, core muscles) to contract and move the bones, which is the function of skeletal muscles (attached to bones, voluntary movement).
So the best answer is D.