Nursing Elites

1. Which type of muscle is characterized by involuntary contractions, is striated, and is primarily found in the heart?

• A. Skeletal muscle
• B. Smooth muscle
• C. Cardiac muscle
• D. Elastic muscle

Correct answer: C

Rationale: The correct answer is C, Cardiac muscle. Cardiac muscle fits the description provided in the question as it exhibits involuntary contractions, striations, and is predominantly located in the heart. Skeletal muscle, while also striated, is voluntary and not involuntary like cardiac muscle. Smooth muscle lacks striations and is typically found in the walls of internal organs. Elastic muscle is not a recognized type of muscle tissue in human anatomy, making it an incorrect choice.

2. During embryonic development, all tissues originate from

• A. Epithelial tissue only
• B. Muscle tissue only
• C. Connective tissue only
• D. Embryonic germ layers

Correct answer: D

Rationale: During embryonic development, all tissues originate from the three primary germ layers: ectoderm, mesoderm, and endoderm. These germ layers give rise to various tissues and organs in the developing embryo through a process called gastrulation. Epithelial, muscle, and connective tissues are derived from these germ layers during development. Therefore, choices A, B, and C are incorrect as tissues do not originate from a single type of tissue but rather from the embryonic germ layers which differentiate into various tissues and organs.

3. Which of the following sentences is written in the active voice?

• A. John threw the ball.
• B. The ball was thrown by John.
• C. The ball had been thrown by John.
• D. The ball is thrown by John.

Correct answer: A

Rationale: The correct answer is B: 'John threw the ball.' Active voice sentences have the subject performing the action, which is the case in this sentence where 'John' is the subject performing the action 'threw.' Choices A, C, and D are in passive voice where the subject receives the action rather than performing it.

4. Jensen has been assigned a project on ancient Greece, but the project terms are general. This means that he can select any topic of interest to him from Ancient Greece and focus his project around this. Jensen is overwhelmed and does not even know where to begin. What section of the library should he check first for general information about ancient Greece?

• A. 100
• B. 200
• C. 400
• D. 900

Correct answer: D

Rationale: Jensen should check the 900 section of the library for general information about ancient Greece. In the Dewey Decimal Classification system, the 900 section covers history and geography. Ancient Greece falls under the category of history, so Jensen can find a wide range of resources related to ancient Greece in this section, which will provide him with a good starting point for his project. Choice A (100) refers to Philosophy and psychology, Choice B (200) to Religion, and Choice C (400) to Languages, which are not directly related to ancient Greece, making them incorrect options.

5. Solve the system of equations. Equation 1: 2x + y = 0 Equation 2: x - 2y = 8

• A. (1.8, 3.6) and (-1.8, -3.6)
• B. (1.8, -3.6) and (-1.8, 3.6)
• C. (1.3, 2.6) and (-1.3, -2.6)
• D. (-1.3, 2.6) and (1.3, -2.6)

Correct answer: B

Rationale: From Equation 1: 2x + y = 0. Solve for y: y = -2x. Substitute y = -2x into Equation 2: x - 2(-2x) = 8. Simplify to x + 4x = 8, then 5x = 8, and x = 8 ÷ 5 = 1.6. Substitute x = 1.6 back into y = -2x to find y = -3.2. Therefore, one solution is (1.6, -3.2). To find the second solution, use -1.6 for x to get (-1.6, 3.2). Thus, the correct answer is B, representing the solutions (1.8, -3.6) and (-1.8, 3.6). Choices A, C, and D contain incorrect values that do not match the solutions derived from solving the system of equations.

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