which type of muscle is characterized by voluntary control and is responsible for body movement
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ATI TEAS 7

TEAS 7 science practice questions

1. Which type of muscle is characterized by voluntary control and is responsible for body movement?

Correct answer: C

Rationale: The correct answer is skeletal muscle. Skeletal muscle is characterized by voluntary control, meaning it is under conscious control. It is responsible for body movement, such as walking, running, and lifting objects. Cardiac muscle is involuntary and found in the heart, while smooth muscle is also involuntary and found in organs like the intestines. Connective tissue is not a type of muscle but rather a type of tissue that provides support and structure in the body.

2. What is the process of cells restoring damaged or lost tissues called?

Correct answer: D

Rationale: Rationale: A) Cell division refers to the process by which a cell divides into two daughter cells. B) Cell differentiation is the process by which cells become specialized for specific functions. C) Cell growth is the increase in cell size or number. D) Cell regeneration is the process of cells restoring damaged or lost tissues by replacing or repairing the damaged cells. This process is essential for healing wounds and maintaining tissue integrity.

3. What is the process by which lighter nuclei fuse to form heavier nuclei, releasing a large amount of energy?

Correct answer: B

Rationale: Fusion is the process by which lighter nuclei combine to form heavier nuclei, releasing a large amount of energy in the process. This process is the source of energy in stars, including our Sun. Fission, the process of splitting heavier nuclei into lighter nuclei, is not correct. Radioactivity involves the emission of particles or radiation from the nucleus of an unstable atom, which is different from fusion. A chain reaction is a self-sustaining reaction where the products of one reaction cause further reactions, which is unrelated to fusion.

4. What factors can contribute to edema, a condition characterized by swelling due to a buildup of lymph fluid?

Correct answer: C

Rationale: Edema is caused by the accumulation of excess fluid in the body's tissues, leading to swelling. Poor circulation or blockage in the lymphatic system can contribute to the development of edema by impairing the body's ability to properly drain fluid. While regular exercise, maintaining a healthy weight, and proper hydration are crucial for overall health, they are not direct causes of edema. Poor circulation or blockage in the lymphatic system disrupts the normal balance of fluid in the body, resulting in edema. Therefore, the correct factor that can contribute to edema is poor circulation or blockage in the lymphatic system.

5. Which hormone is produced by the thyroid gland?

Correct answer: B

Rationale: The correct answer is B: Thyroxine. The thyroid gland produces thyroxine, a hormone essential for regulating metabolism. Insulin is produced by the pancreas to regulate blood sugar levels. Adrenaline is produced by the adrenal glands to prepare the body for the 'fight or flight' response. Cortisol is produced by the adrenal cortex in response to stress, not by the thyroid gland.

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