Nursing Elites

1. Neurotransmitters send chemical messages across the gap between one neuron and another through which of the following structures?

• A. Schwann cell
• B. ganglion
• C. synapse
• D. axon

Correct answer: C

Rationale: Neurotransmitters send chemical messages across the gap between one neuron and another through a structure called the synapse. The synapse is a specialized junction where the axon of one neuron meets the dendrite or cell body of another neuron. Neurotransmitters are released from the axon terminal of the presynaptic neuron and travel across the synaptic cleft to bind to receptors on the postsynaptic neuron, transmitting the signal between the two neurons. Choice A, Schwann cell, is incorrect as Schwann cells are responsible for producing myelin sheath around axons in the peripheral nervous system, not for transmitting neurotransmitters between neurons. Choice B, ganglion, is incorrect as ganglia are clusters of nerve cell bodies outside the central nervous system and do not directly participate in the transmission of chemical messages between neurons. Choice D, axon, is incorrect as the axon is a long, slender projection of a neuron that conducts electrical impulses away from the cell body and towards the axon terminals, where neurotransmitters are released into the synapse, but it is not the structure across which neurotransmitters travel to communicate between neurons.

2. Caret, carrot, and to, two, and too share something in common. They:

• A. Are nouns
• B. Are monosyllabic
• C. Are homophones
• D. Represent things in nature

Correct answer: C

Rationale: The correct answer is C. Caret, carrot, and to, two, and too are all examples of homophones. Homophones are words that sound alike but have different meanings and spellings. In this case, while these words are spelled differently and have different meanings, they are pronounced the same way. Choices A, B, and D are incorrect because these words being discussed do not all fall under the same grammatical category as nouns, monosyllabic words, or representations of things in nature. The commonality among these words lies in being homophones, not in being nouns, monosyllabic, or representations of nature.

3. Which of the following demonstrates correct punctuation?

• A. Graham still needs the following items for his class: a sable brush, soft pastels, a sketchbook, and an easel.
• B. Graham still needs the following items for his class, a sable brush, soft pastels, a sketchbook, and an easel.
• C. Graham still needs the following items for his class: a sable brush; soft pastels; a sketchbook; and an easel.
• D. Graham still needs the following items for his class – a sable brush; soft pastels; a sketchbook; and an easel.

Correct answer: A

Rationale: Choice A demonstrates correct punctuation. The sentence uses a colon to introduce a list, which is the most appropriate punctuation in this context. A colon is typically used to signal that a list or explanation follows, making it the suitable choice here. Choices B, C, and D either use a comma, semi-colon, or dash incorrectly to introduce the list, deviating from the standard punctuation rule for listing items. Therefore, they are incorrect in the context of this sentence.

4. What happens during expiration?

• A. The diaphragm contracts and the thoracic cavity expands.
• B. The diaphragm relaxes and the thoracic cavity contracts.
• C. The thoracic cavity expands, increasing pressure.
• D. The diaphragm relaxes and moves upward.

Correct answer: B

Rationale: The correct answer is B. During expiration, the diaphragm relaxes, causing the thoracic cavity to contract. As the thoracic cavity decreases in size, the pressure inside the lungs increases, leading to air flowing out of the lungs. This process helps to expel carbon dioxide-rich air from the body. Choices A, C, and D are incorrect. In choice A, the diaphragm contracting and the thoracic cavity expanding describes inspiration, not expiration. Choice C is incorrect because during expiration, the thoracic cavity actually decreases in size. Choice D is incorrect as the diaphragm moving upward is not a typical movement associated with expiration.

5. “His ego was as big as the tallest mountain.” This sentence is an example of which figure of speech?

• A. Hyperbole
• B. Idiom
• C. Simile
• D. Metaphor

Correct answer: C

Rationale: This sentence is an example of a simile because it compares 'his ego' to 'the tallest mountain' using the word 'as.' Similes use 'like' or 'as' to create a comparison, which is the case here. A metaphor, on the other hand, does not use 'like' or 'as' but instead states that one thing is another. Hyperbole involves exaggerated statements not meant to be taken literally, while idioms are expressions that have a figurative meaning different from the literal interpretation. Therefore, the correct answer is 'C: Simile.'

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