Nursing Elites

1. What is the function of the pituitary gland?

• A. Regulating metabolism
• B. Producing bile
• C. Filtering blood
• D. Controlling muscle movement

Correct answer: A

Rationale: The pituitary gland, known as the 'master gland,' plays a crucial role in regulating various physiological processes by secreting hormones that control other endocrine glands. This includes the regulation of metabolism, growth, reproduction, stress response, and more. Therefore, the correct function of the pituitary gland is regulating metabolism, making choice A the correct answer. Choices B, C, and D are incorrect as the pituitary gland is not involved in producing bile, filtering blood, or controlling muscle movement.

2. 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.

3. What type of joint is found at the elbow?

• A. Ball and socket
• B. Hinge
• C. Pivot
• D. Saddle

Correct answer: B

Rationale: The correct answer is B: Hinge. A hinge joint, such as the one found at the elbow, allows for movement primarily in one plane, enabling flexion and extension similar to the movement of a door hinge. This joint structure permits bending and straightening of the arm, controlling the range of motion in a specific direction. Choices A, C, and D are incorrect. A ball and socket joint allows for multi-axial movement like the hip joint, a pivot joint allows for rotation around an axis like the joint between the first and second cervical vertebrae, and a saddle joint allows for movement in two planes at right angles to each other like the joint at the base of the thumb.

4. What condition might result from a lack of vitamin C?

• A. Kwashiorkor
• B. Pellagra
• C. Rickets
• D. Scurvy

Correct answer: D

Rationale: Scurvy is the correct answer. Scurvy is a condition caused by a deficiency of vitamin C in the diet. Vitamin C is essential for collagen synthesis, and its deficiency leads to symptoms such as weakness, swollen and bleeding gums, joint pain, fatigue, and easy bruising. If left untreated, scurvy can lead to more severe complications. Choices A, B, and C are incorrect. Kwashiorkor is a severe form of malnutrition due to insufficient protein intake, pellagra is caused by a deficiency of niacin (vitamin B3), and rickets results from a deficiency of vitamin D, calcium, or phosphate.

5. Which is an anterior feature of the human head?

• A. The nose
• B. The ears
• C. The occipital lobe
• D. The temporal lobe

Correct answer: A

Rationale: The nose is an anterior feature of the human head, located in the frontal part of the face. It plays a vital role in the respiratory system by allowing air to enter and exit the body. Additionally, the nose contains olfactory receptors that enable the sense of smell. The ears, occipital lobe, and temporal lobe are not anterior features of the human head. The ears are located on the sides, the occipital lobe is at the back of the head, and the temporal lobe is on the sides and base of the cerebral cortex.

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