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Nursing Elites

ATI TEAS 7

Anatomy

1. The stratum corneum, the outermost layer of the epidermis, is primarily composed of:

Correct answer: A

Rationale: The correct answer is A: 'Keratinized dead cells.' The stratum corneum is the outermost layer of the epidermis and is mainly composed of keratinized dead cells. These cells are flattened, fully keratinized, and provide a protective barrier for the skin against environmental factors such as pathogens, UV radiation, and water loss. Melanocytes (Option B), Langerhans cells (Option C), and Merkel cells (Option D) are all important components of the epidermis but are not the primary constituents of the stratum corneum. Melanocytes produce melanin, Langerhans cells are involved in the immune response, and Merkel cells are associated with the sense of touch.

2. The artist paints breathtaking landscapes. What is the third-person singular, present tense form of the verb "paint"?

Correct answer: B

Rationale: Verbs change depending on the subject (person) and time (tense).

3. The sentence "The audience was captivated by the speaker's compelling story" implies that the audience:

Correct answer: C

Rationale: "Captivated" suggests the audience was completely held by the speaker's story.

4. Which type of muscle tissue is found in the walls of blood vessels and helps regulate blood flow?

Correct answer: B

Rationale: The correct answer is B: Smooth muscle. Smooth muscle is found in the walls of blood vessels and plays a crucial role in regulating blood flow by contracting and relaxing to adjust the diameter of the blood vessels. Skeletal muscle (option A) is responsible for movement of the body, cardiac muscle (option C) is found in the heart and responsible for pumping blood, and striated muscle (option D) refers to both skeletal and cardiac muscle due to their striated appearance. Therefore, the specific type of muscle tissue in blood vessel walls is smooth muscle.

5. What type of bone is the kneecap (patella)?

Correct answer: B

Rationale: The correct answer is B: Short bone. The kneecap, or patella, is classified as a short bone because it is roughly cube-shaped and is composed of spongy bone enclosed by a thin layer of compact bone. Short bones provide support and stability with limited motion, making them ideal for protecting joints like the knee. Long bones are typically elongated, flat bones are thin and curved, and irregular bones have complex shapes. Understanding the classification of bones can help in identifying their functions and structural characteristics.

6. What is the main function of transition words and phrases in writing?

Correct answer: C

Rationale: Transition words and phrases bridge ideas, create logical flow, and enhance the coherence of your writing.

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