Which of the following types of muscle is a voluntary muscle?

Correct Answer: A

Rationale: The correct answer is A: Skeletal muscle. Skeletal muscles are voluntary muscles because they are under conscious control. We can move them at will to perform various activities like walking or lifting objects. Smooth muscle (B), pulmonary muscle (C), and cardiac muscle (D) are involuntary muscles controlled by the autonomic nervous system. Smooth muscle is found in organs like the digestive tract, pulmonary muscle is not a recognized muscle type, and cardiac muscle is found in the heart and contracts involuntarily to pump blood. Therefore, the correct answer is skeletal muscle as it is the only type of muscle that is under voluntary control.

Correct Answer: D

Rationale: The correct answer is D because the endocrine system produces hormones that help regulate blood sugar levels. Hormones like insulin and glucagon are released by endocrine glands to control glucose levels in the blood. This process is crucial for maintaining homeostasis in the body. A, B, and C are incorrect: A: Regulating body temperature is primarily the function of the integumentary and nervous systems. B: Giving the body shape and structure is mainly the role of the skeletal and muscular systems. C: Sensing and interpreting messages from the environment are tasks of the nervous system.

Correct Answer: C

Rationale: The correct answer is C because a cane is typically used to provide stability when a person is unsteady or has weakness. It helps distribute weight and support balance while walking. Choice A is incorrect as it focuses solely on balance without considering weakness. Choice B is incorrect because it specifies only one leg, whereas a cane can be used for general weakness. Choice D is incorrect as it focuses on bed mobility rather than walking stability.

Correct Answer: A

Rationale: The correct answer is A: Low blood pressure. As a person nears death, their blood pressure often decreases due to the body's declining functions. This is a common physiological response in the final stages of life. Sharper vision (B) is not typically associated with approaching death, while feeling warm (C) could be a sign of fever or infection rather than impending death. Dry skin (D) is a common symptom in many conditions but is not a definitive sign of approaching death.

Correct Answer: D

Rationale: The correct answer is D because the Joint Commission's primary goal is to improve the quality and safety of care in healthcare facilities through accreditation and certification. This is achieved by setting standards and conducting evaluations. Choice A is incorrect because the Joint Commission is a non-profit entity. Choice B is incorrect as it is a non-governmental organization, not a state inspection agency. Choice C is incorrect because membership is voluntary, not mandatory, for healthcare facilities.