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ATI TEAS 7

anatomy

1. Which hormone, produced by the adrenal glands, helps regulate the body's response to stress, including increasing blood pressure and suppressing the immune system?

Correct answer: c

Rationale: The correct answer is C: Cortisol. Cortisol is a hormone produced by the adrenal glands that plays a crucial role in the body's response to stress. It helps regulate blood pressure by increasing it to prepare the body for stressors. Additionally, cortisol suppresses the immune system to prioritize the stress response. Aldosterone, while also produced by the adrenal glands, primarily regulates electrolyte balance and blood pressure. Epinephrine, produced by the adrenal medulla, is involved in the fight-or-flight response but does not suppress the immune system like cortisol. Insulin, produced by the pancreas, regulates blood sugar levels and is not directly involved in the stress response. Therefore, Cortisol is the hormone that specifically helps regulate the body's response to stress by increasing blood pressure and suppressing the immune system.

2. The spleen, an organ associated with the lymphatic system, plays a crucial role in:

Correct answer: B

Rationale: The correct answer is B: 'Filtering blood and destroying old red blood cells.' The spleen is part of the lymphatic system and acts as a blood filter, removing old or damaged red blood cells and helping to fight infections. It does not play a role in regulating blood sugar levels (A), producing digestive enzymes (C), or secreting hormones (D). Understanding the function of the spleen in filtering blood and removing old red blood cells is crucial for grasping its role in maintaining overall health and immunity.

3. The student studies diligently for her upcoming exam. Which word is the plural form of "study"?

Correct answer: C

Rationale: The plural form of a noun refers to more than one of that thing.

4. Which type of muscle tissue contracts involuntarily and is found in organs like the heart and intestines?

Correct answer: C

Rationale: The correct answer is C: Smooth muscle. Smooth muscle tissue contracts involuntarily and is found in organs like the heart and intestines. Skeletal muscle is responsible for voluntary movements, and cardiac muscle is specific to the heart. Therefore, smooth muscle is the only type of muscle tissue that fits the description provided in the question, making it the correct choice. Option D, 'All of the above,' is incorrect as it includes skeletal and cardiac muscles, which do not fit the criteria of being found in organs like the heart and intestines. Understanding the differences between these types of muscle tissue is crucial for comprehending their specific functions in the body.

5. What part of speech is the underlined word in the sentence "The students eagerly awaited the results"?

Correct answer: B

Rationale: Option B identifies "results" as the direct object of the verb "awaited," making it a noun.

6. Which organelle is responsible for carrying out photosynthesis in plant cells?

Correct answer: C

Rationale: Rationale: A) Golgi apparatus: The Golgi apparatus is responsible for modifying, sorting, and packaging proteins for secretion or for use within the cell. It is not involved in photosynthesis. B) Mitochondria: Mitochondria are known as the powerhouse of the cell and are responsible for generating energy in the form of ATP through cellular respiration. They are not involved in photosynthesis. C) Chloroplasts: Chloroplasts are the organelles responsible for carrying out photosynthesis in plant cells. They contain chlorophyll, a pigment that captures light energy and converts it into chemical energy in the form of glucose. D) Lysosomes: Lysosomes are membrane-bound organelles that contain digestive enzymes to break down waste materials and cellular debris. They are not involved in photosynthesis. Therefore, the correct answer is C) Chloroplasts, as they are specifically responsible for carrying out photosynthesis in plant

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