Nursing Elites

1. Which type of muscle tissue is voluntary?

• A. Cardiac muscle
• B. Skeletal muscle
• C. Smooth muscle
• D. Striated muscle

Correct answer: B

Rationale: The correct answer is B, Skeletal muscle. Skeletal muscle is a type of voluntary muscle tissue, allowing conscious control over its movement. Unlike smooth and cardiac muscle, which are involuntary, skeletal muscle is under direct voluntary control. Cardiac muscle (choice A) is involuntary and found in the heart. Smooth muscle (choice C) is also involuntary and found in the walls of internal organs. While skeletal muscle is striated (contains stripes), choice D is not the best answer as it does not specifically address the voluntary nature of skeletal muscle.

2. 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.

3. Which bone does not articulate with any other bone?

• A. Femur
• B. Hyoid
• C. Radius
• D. Tibia

Correct answer: B

Rationale: The correct answer is the Hyoid bone. The hyoid bone is distinctive as it does not directly articulate with any other bone in the body. Instead, it is held in place by muscles and ligaments, playing a crucial role in supporting the tongue and providing attachment points for various muscles involved in swallowing and speech. The other choices, Femur, Radius, and Tibia, all articulate with other bones in the body. The femur articulates with the hip bone, the radius articulates with the ulna and other bones in the wrist, and the tibia articulates with the femur and fibula.

4. What is the primary function of the nervous system?

• A. To transmit signals and coordinate body activities
• B. To fight infections
• C. To produce hormones
• D. To regulate body temperature

Correct answer: A

Rationale: The primary function of the nervous system is to transmit signals and coordinate body activities. It controls and regulates body functions by sending and receiving signals between different parts of the body, enabling responses to internal and external stimuli. This intricate network allows for communication between the brain, spinal cord, and the rest of the body, ultimately facilitating movement, sensation, thoughts, and various bodily functions. Choices B, C, and D are incorrect as they do not represent the primary function of the nervous system. Fighting infections is primarily the role of the immune system, producing hormones is the function of the endocrine system, and regulating body temperature involves mechanisms of thermoregulation within the body, not directly controlled by the nervous system.

5. What is the role of the gallbladder in digestion?

• A. To produce bile
• B. To store and concentrate bile
• C. To break down fats
• D. To secrete digestive enzymes

Correct answer: B

Rationale: The gallbladder's primary function in digestion is to store and concentrate bile produced by the liver. Bile is essential for the digestion and absorption of fats in the small intestine. While the gallbladder does not produce bile (Choice A) or secrete digestive enzymes (Choice D), it plays a crucial role in storing and releasing bile when needed. Therefore, the correct answer is B.

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