which of the following types of muscle tissue is found attached to bones and allows for voluntary movement
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ATI TEAS 7

ATI TEAS 7 science review

1. Which of the following types of muscle tissue is found attached to bones and allows for voluntary movement?

Correct answer: C

Rationale: The correct answer is C: Skeletal muscle. Skeletal muscle is attached to bones and allows for voluntary movement, such as walking, running, and lifting objects. Smooth muscle, found in the walls of internal organs and blood vessels, is responsible for involuntary movements. Cardiac muscle is specific to the heart and controls involuntary contraction. Connective tissue, on the other hand, provides support and connects different structures in the body, but it is not responsible for voluntary movement like skeletal muscle.

2. Which of the following is responsible for regulating body temperature?

Correct answer: A

Rationale: The correct answer is the Hypothalamus. The hypothalamus plays a crucial role in regulating body temperature, hunger, thirst, and maintaining overall homeostasis in the body. It receives input from temperature receptors in the skin and internal organs and helps initiate responses to maintain a stable internal body temperature. Acting as the body's thermostat, the hypothalamus adjusts responses to ensure the body's temperature remains within a narrow range, despite external conditions. The Cerebellum (Choice B) is primarily involved in coordinating movement and balance, not regulating body temperature. The Pituitary gland (Choice C) is responsible for producing and secreting hormones that regulate various bodily functions but not directly involved in body temperature regulation. The Thyroid gland (Choice D) plays a role in metabolism and hormone regulation but is not the primary regulator of body temperature.

3. What does antidiuretic hormone (ADH) help the kidneys regulate?

Correct answer: C

Rationale: Antidiuretic hormone (ADH) helps the kidneys regulate urine output by controlling water reabsorption. ADH acts on the kidneys to increase the reabsorption of water, leading to a decrease in urine output. This helps the body conserve water and maintain proper fluid balance. ADH primarily affects urine output by controlling water reabsorption and does not directly regulate acid-base balance or blood pressure. Therefore, choices A and B are incorrect because ADH does not directly influence acid-base balance or blood pressure.

4. The adrenal cortex produces a group of steroid hormones called corticosteroids. What is a MAJOR function of corticosteroids?

Correct answer: B

Rationale: Corticosteroids, produced by the adrenal cortex, primarily function to control blood pressure and electrolyte balance. One of the key corticosteroids, aldosterone, plays a crucial role in regulating sodium and potassium levels in the body. This regulation is essential for maintaining blood pressure and electrolyte balance. Choices A, C, and D are incorrect because corticosteroids do not primarily regulate insulin sensitivity and blood sugar levels, stimulate the immune system and inflammatory response, or promote growth and development during puberty. While corticosteroids can have effects on insulin sensitivity, immune response, and growth, their major role is in maintaining blood pressure and electrolyte balance.

5. Which of the following does not describe a general trait of macromolecules?

Correct answer: C

Rationale: The correct answer is C. While many macromolecules contain carbon, hydrogen, and phosphorus, not all of them do. For example, lipids, a type of macromolecule, may not contain phosphorus. Choice A and B describe structural features that macromolecules can exhibit, whether as single chains or branched forms. Choice D is incorrect as not all macromolecules are used by the body, such as synthetic polymers or certain non-digestible fibers.

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