Nursing Elites

1. Which of the following is known as the production of red blood cells?

• A. Thrombopoiesis
• B. Erythropoiesis
• C. Hematopoiesis
• D. Phagocytosis

Correct answer: B

Rationale: Erythropoiesis specifically refers to the process of producing red blood cells (erythrocytes) in the bone marrow. Hematopoiesis is the broader term that encompasses the production of all types of blood cells, including red blood cells, white blood cells, and platelets. Phagocytosis is the process by which cells engulf and digest particles, while thrombopoiesis is the production of platelets. Therefore, the correct answer is B as it directly relates to the production of red blood cells.

2. Which muscle is responsible for the extension of the elbow?

• A. Biceps brachii
• B. Triceps brachii
• C. Deltoid
• D. Pectoralis major

Correct answer: B

Rationale: The correct answer is B: Triceps brachii. The triceps brachii muscle is responsible for extending the elbow joint. It is located on the back of the upper arm and acts in opposition to the biceps brachii, which is responsible for elbow flexion. The deltoid muscle is primarily responsible for shoulder abduction, not elbow extension. The pectoralis major muscle is involved in movements of the shoulder joint, not the elbow.

3. 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.

4. Which vitamin is essential for the maintenance of healthy skin?

• A. Vitamin A
• B. Vitamin C
• C. Vitamin D
• D. Vitamin K

Correct answer: A

Rationale: Vitamin A is the correct answer. It is crucial for maintaining healthy skin as it supports skin cell growth, repair, and overall skin health. Additionally, vitamin A plays a role in vision and immune function. Deficiency in vitamin A can lead to skin issues such as dryness and poor wound healing. Vitamin C is known for its role in collagen synthesis and antioxidant properties, while Vitamin D is important for bone health and immunity. Vitamin K is essential for blood clotting, but it is not primarily associated with skin health.

5. Which organ system is largely responsible for controlling stress?

• A. The endocrine system
• B. The digestive system
• C. The lymphatic system
• D. The respiratory system

Correct answer: A

Rationale: The endocrine system is largely responsible for controlling stress through the release of hormones such as cortisol and adrenaline. These hormones help regulate the body's response to stress by increasing heart rate, blood pressure, and energy production. The endocrine system plays a crucial role in the body's stress response and helps the body adapt to and cope with stressful situations. The digestive system (Choice B) is primarily responsible for breaking down food and absorbing nutrients, not controlling stress. The lymphatic system (Choice C) is responsible for immune function and maintaining fluid balance, not controlling stress. The respiratory system (Choice D) is responsible for the exchange of oxygen and carbon dioxide, not controlling stress.

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