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Nursing Elites

ATI TEAS 7

physics

1. How is power related to time?

Correct answer: c

Rationale: Power is the rate at which work is done or energy is transferred, and it is not directly linked to time.

2. The diaphragm is a dome-shaped muscle that plays a crucial role in breathing. When it contracts, what happens?

Correct answer: B

Rationale: The diaphragm is a dome-shaped muscle located beneath the lungs. When it contracts, it moves downward, creating more space in the chest cavity. This downward movement of the diaphragm allows the lungs to expand, which lowers the air pressure inside the lungs. As a result, air from the outside rushes in to equalize the pressure, leading to inhalation. Therefore, when the diaphragm contracts, it facilitates the intake of air into the lungs, making option B, 'The lungs expand to allow air intake,' the correct answer.

3. What property of a substance refers to its ability to undergo a chemical change and form new substances?

Correct answer: c

Rationale: Reactivity refers to a substance's ability to undergo a chemical change or reaction, forming new substances with different properties.

4. Which division of the autonomic nervous system is responsible for the "rest and digest" response, promoting relaxation and conservation of energy?

Correct answer: b

Rationale: The correct answer is B, the parasympathetic nervous system. This division of the autonomic nervous system is responsible for the "rest and digest" response, promoting relaxation and conservation of energy. When activated, it slows the heart rate, increases digestion, and helps the body rest and recover. The sympathetic nervous system, on the other hand, is responsible for the "fight or flight" response, preparing the body for action. The somatic nervous system controls voluntary movements, and the central nervous system consists of the brain and spinal cord, coordinating all nervous system functions.

5. Connective tissue provides support and connects other tissues. What is the main component that gives connective tissue its strength?

Correct answer: A

Rationale: The main component that gives connective tissue its strength is collagen fibers. Collagen is a fibrous protein that is the most abundant protein in the human body, providing tensile strength and support to tissues. Collagen fibers are arranged in a parallel fashion, giving connective tissue its resilience and ability to withstand stretching forces. Epithelial cells are not the main component of strength in connective tissue; they are specialized cells that line the surfaces of organs and structures. Nerve cells are responsible for transmitting signals and do not contribute to the strength of connective tissue. Blood cells are not structural components of connective tissue but rather play a role in transportation and immune function.

6. The speaker's enthusiasm was contagious. Which word is the noun form of the adjective "enthusiastic"?

Correct answer: C

Rationale: Nouns can be formed from adjectives using various suffixes.

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