Nursing Elites

1. What are Merkel cells, located in the epidermis, specialized for?

• A. Melanin production
• B. Temperature sensation
• C. Touch perception
• D. Immune defense

Correct answer: C

Rationale: Merkel cells are specialized touch receptors located in the epidermis of the skin. Their primary function is to perceive light touch and pressure. They play a crucial role in the sensory perception of touch stimuli. Option A, melanin production, is incorrect because Merkel cells are not involved in producing melanin. Option B, temperature sensation, is incorrect as Merkel cells are not specialized for sensing temperature. Option D, immune defense, is also incorrect as Merkel cells do not have a role in immune defense mechanisms.

2. Scoliosis is a condition characterized by abnormal lateral curvature of the spine. Which part of the spine is most commonly affected?

• A. Cervical spine (neck)
• B. Thoracic spine (upper back)
• C. Lumbar spine (lower back)
• D. All of the above

Correct answer: B

Rationale: Scoliosis most commonly affects the thoracic spine, which is the upper back region. While scoliosis can potentially affect any part of the spine, the thoracic spine is the most frequently involved area. This region is more commonly affected due to the natural structural curves of the spine and the biomechanics of the thoracic area. The cervical spine (neck) and lumbar spine (lower back) can also be affected by scoliosis, but the thoracic spine is the primary area of involvement in most cases. Therefore, the correct answer is B, as it is the part of the spine most commonly affected by scoliosis.

3. What is the purpose of the passage?

• A. to inform
• B. to entertain
• C. to describe
• D. to persuade

Correct answer: A

Rationale: The main purpose of this passage is to inform readers about the role of skin coloration and markings in snakes. It explains how these markings help snakes hide from predators and how they can also indicate venomousness. The passage also provides examples such as the scarlet kingsnake to illustrate how some nonvenomous snakes mimic the appearance of venomous snakes for protection. This informative content aims to educate readers about the survival strategies of snakes, rather than entertain, describe, or persuade them.

4. Which sentence avoids a comma splice?

• A. The wind howled, the branches swayed, and rain lashed against the windows.
• B. He packed his bags, checked the weather forecast, and then hit the road.
• C. The movie was entertaining; it was also thought-provoking.
• D. Tired and hungry, she stopped for a quick bite at the cafe.

Correct answer: C

Rationale: Option C uses a semicolon to correctly separate the two independent clauses 'The movie was entertaining' and 'it was also thought-provoking.' This usage of a semicolon avoids a comma splice, which occurs when two independent clauses are incorrectly joined by a comma without a coordinating conjunction or appropriate punctuation. Choices A, B, and D are incorrect because they all contain comma splices. In choice A, the comma splice is present between 'The wind howled' and 'the branches swayed.' In choice B, the comma splice occurs between 'He packed his bags' and 'checked the weather forecast.' Choice D has a comma splice between 'Tired and hungry' and 'she stopped for a quick bite at the cafe.'

5. Chyle, a milky white fluid, is transported by lymphatic vessels from the:

• A. Lungs
• B. Intestines
• C. Kidneys
• D. Skin

Correct answer: B

Rationale: Chyle, a milky white fluid, is formed in the small intestine during digestion. It is composed of lymph and emulsified fats. Lymphatic vessels in the intestines, specifically lacteals, transport chyle from the intestines to the bloodstream for the distribution of nutrients throughout the body. The transport of chyle from the lungs, kidneys, or skin is not correct as these organs are not primarily involved in the production or transportation of chyle.

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