Nursing Elites

1. What is the function of the lungs in the respiratory system?

• A. To filter blood
• B. To exchange gases
• C. To produce energy
• D. To remove waste products

Correct answer: B

Rationale: The correct function of the lungs in the respiratory system is to exchange gases. The lungs facilitate the exchange of oxygen and carbon dioxide between the air we breathe in and the blood, ensuring oxygen is absorbed and carbon dioxide is removed during respiration. Choice A is incorrect as the kidneys, not the lungs, filter blood. Choice C is incorrect as energy production primarily occurs in cells, not in the lungs. Choice D is incorrect as waste removal, such as the excretion of carbon dioxide, is a function of the lungs, but the primary function is the exchange of gases.

2. What is the average normal body temperature in degrees Celsius?

• A. 30°C
• B. 32°C
• C. 35°C
• D. 37°C

Correct answer: D

Rationale: The average normal body temperature in degrees Celsius is 37°C. This temperature is considered the standard measurement for the human body under normal conditions. It is essential to know this baseline temperature for monitoring health and detecting abnormalities such as fever. Choice A, 30°C, is too low for the average normal body temperature. Choice B, 32°C, is also below the standard normal body temperature. Choice C, 35°C, is closer but still lower than the average normal body temperature of 37°C.

3. Which part of the brain is most posterior?

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

Correct answer: D

Rationale: The occipital lobe is located at the most posterior part of the brain, towards the back of the head. It is primarily responsible for processing visual information from the eyes and plays a crucial role in vision-related functions. The frontal lobe (Choice A) is located at the front of the brain and is responsible for functions such as reasoning and planning. The parietal lobe (Choice B) is located in the middle part of the brain and plays a role in sensory information processing. The temporal lobe (Choice C) is located on the sides of the brain and is involved in processing auditory information and memory. Therefore, the occipital lobe (Choice D) is the correct answer as it is the most posterior region of the brain.

4. Which organ system is primarily responsible for regulating muscle growth?

• A. The skeletal system
• B. The endocrine system
• C. The nervous system
• D. The reproductive system

Correct answer: B

Rationale: The endocrine system is primarily responsible for regulating muscle growth through the production and release of hormones such as growth hormone, testosterone, and insulin-like growth factors. These hormones play crucial roles in stimulating muscle protein synthesis, increasing muscle mass, and promoting overall muscle growth and repair. The skeletal system provides structural support for muscles but does not directly regulate muscle growth. The nervous system controls muscle contractions and movements but is not primarily responsible for muscle growth. The reproductive system plays a role in fertility and secondary sexual characteristics but does not have a direct role in regulating muscle growth.

5. What is the primary hormone secreted by the thyroid gland?

• A. Oxytocin
• B. TSH
• C. Adrenaline
• D. T4

Correct answer: D

Rationale: The correct answer is D: T4. The primary hormone secreted by the thyroid gland is thyroxine, also known as T4. T4 plays a crucial role in regulating metabolism, growth, and energy levels in the body. It is converted into the more active form, triiodothyronine (T3), which exerts most of the biological effects of thyroid hormones. Choices A, B, and C are incorrect. Oxytocin is not produced by the thyroid gland but by the pituitary gland, TSH (thyroid-stimulating hormone) is secreted by the pituitary gland to stimulate the thyroid gland, and adrenaline is produced by the adrenal glands, not the thyroid gland.

Similar Questions