Nursing Elites

1. The epidermis is classified as which of the following?

• A. Cell
• B. Tissue
• C. Organ
• D. System

Correct answer: B

Rationale: The epidermis is classified as a tissue, more specifically as a layer of cells that form the outermost part of the skin. It is composed of multiple layers of cells that protect underlying tissues and regulate various functions related to the skin. Choice A, Cell, is incorrect because the epidermis is not just a single cell but rather a collection of cells. Choice C, Organ, is incorrect because the epidermis is not an organ on its own but rather a part of an organ, the skin. Choice D, System, is incorrect because the epidermis is not a system but rather a component of the integumentary system.

2. Which type of blood vessel carries oxygenated blood away from the heart?

• A. Veins
• B. Arteries
• C. Capillaries
• D. Lymphatic vessels

Correct answer: B

Rationale: Arteries are blood vessels that carry oxygenated blood away from the heart to supply tissues and organs with oxygen and nutrients. Veins carry deoxygenated blood back to the heart. Capillaries facilitate the exchange of nutrients and gases between the blood and tissues. Lymphatic vessels are part of the lymphatic system responsible for returning interstitial fluid to the bloodstream. Therefore, the correct answer is arteries as they carry oxygenated blood away from the heart.

3. What is the primary function of the small intestine in the digestive system?

• A. To secrete digestive enzymes
• B. To absorb nutrients
• C. To break down food
• D. To absorb water

Correct answer: B

Rationale: The correct answer is B: To absorb nutrients. The small intestine's main role in the digestive system is to absorb nutrients from digested food. It has specialized structures, such as villi and microvilli, that increase its surface area for efficient absorption of nutrients into the bloodstream. Choice A is incorrect because the small intestine does not primarily secrete digestive enzymes; that role is mainly carried out by the pancreas and other digestive organs. Choice C is incorrect because the small intestine primarily absorbs nutrients rather than breaking down food. Choice D is incorrect because the absorption of water primarily occurs in the large intestine, not the small intestine.

4. Which lobe of the brain is primarily responsible for processing sensory information related to touch, temperature, and body position?

• A. Frontal lobe
• B. Parietal lobe
• C. Occipital lobe
• D. Temporal lobe

Correct answer: B

Rationale: The parietal lobe is primarily responsible for processing sensory information related to touch, temperature, and body position. It plays a crucial role in interpreting sensations from different parts of the body, including proprioception, which is the awareness of body position. The frontal lobe is more associated with functions like decision-making and personality, the occipital lobe is primarily involved in visual processing, and the temporal lobe is responsible for auditory processing and memory. Therefore, the parietal lobe is the correct answer for this question.

5. What is the primary role of the large intestine?

• A. To absorb nutrients
• B. To absorb water
• C. To break down food
• D. To secrete digestive enzymes

Correct answer: B

Rationale: The correct answer is B: To absorb water. The primary role of the large intestine is to absorb water from indigestible food matter. This absorption process helps in forming solid waste for excretion. Nutrient absorption primarily occurs in the small intestine, not the large intestine. Breaking down food and secreting digestive enzymes are functions primarily associated with the stomach and small intestine.

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