Nursing Elites

1. Which structure in the respiratory system is responsible for gas exchange?

• A. Trachea
• B. Alveoli
• C. Bronchi
• D. Diaphragm

Correct answer: B

Rationale: The alveoli in the lungs are responsible for gas exchange. Alveoli have a rich blood supply and thin walls, enabling the exchange of oxygen and carbon dioxide. Oxygen diffuses into the blood from the alveoli, while carbon dioxide diffuses out. The trachea functions as an air passage, bronchi are the main airways into the lungs, and the diaphragm is the primary muscle involved in breathing by aiding in lung expansion and contraction, but they are not directly responsible for gas exchange like the alveoli.

2. Which part of the brain controls the coordination of muscle movements?

• A. Cerebrum
• B. Cerebellum
• C. Thalamus
• D. Medulla oblongata

Correct answer: B

Rationale: The cerebellum is the part of the brain responsible for controlling the coordination of muscle movements and helping to maintain balance. It receives information from the sensory systems, the spinal cord, and other parts of the brain to regulate voluntary movements. The cerebrum (choice A) is primarily responsible for higher brain functions such as thinking and decision-making, not muscle coordination. The thalamus (choice C) acts as a relay station for sensory information but is not directly involved in muscle coordination. The medulla oblongata (choice D) is responsible for regulating vital autonomic functions like breathing and heart rate, rather than muscle coordination.

3. While some people claim that any kind of distracted driving is dangerous, texting beats them all by keeping attention away from the road.

• A. Driving and texting have gone hand in hand ever since the irst teen decided that he needed to let his friends know what he was thinking right then and there. Government ofices have kept tabs on distracted drivers, and the numbers are staggering. The years of the study were from 2002 to
• B. Texting while driving has been linked to a dramatic increase in road accidents, with government data showing that drivers are 23 times more likely to crash when texting than when performing other tasks.
• C. While it’s true that distracted driving is dangerous, texting is particularly hazardous as it requires drivers to divert their attention from the road for an extended period. This prolonged distraction increases the risk of accidents.
• D. Many forms of distracted driving, such as eating or adjusting the radio, are common, but texting stands out due to the high number of accidents and fatalities it causes annually.

Correct answer: A

Rationale: This choice provides a detailed explanation relating to the topic of distracted driving and specifically mentions the issue of texting while driving. It highlights the prevalence of distracted driving due to texting and mentions the efforts of government offices to address this problem. The explanation is relevant and directly supports the idea that texting is the most dangerous form of distraction while driving.

4. What are apocrine and eccrine?

• A. Blood vessel
• B. Cell types
• C. Hormones
• D. Sweat glands

Correct answer: D

Rationale: Apocrine and eccrine refer to types of sweat glands in the human body. Apocrine sweat glands are larger and located in areas like the armpits and groin, producing a thicker secretion that can be associated with body odor. Eccrine sweat glands are found throughout the skin and are responsible for regulating body temperature through the production of sweat. Understanding the functions and locations of these glands is essential in comprehending the body's thermoregulation processes.

5. Which of the following bones is not associated with the leg?

• A. femur
• B. tibia
• C. patella
• D. radius

Correct answer: D

Rationale: The correct answer is D, radius. According to the passage, the radius is a bone in the lower arm, not in the leg. The femur, tibia, and patella are bones associated with the leg. The femur is the thigh bone, the tibia is the shin bone, and the patella is the kneecap. Therefore, the radius is the only bone among the options that is not associated with the leg.

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