HESI A2
HESI A2 Anatomy and Physiology 2023
1. Which of the following is the largest organ in the human body?
- A. Liver
- B. Skin
- C. Brain
- D. Heart
Correct answer: B
Rationale: The skin is the largest organ in the human body. It serves as a protective barrier against the environment, regulates temperature, and provides sensory information. The liver, brain, and heart are vital organs, but they are not as extensive as the skin. The liver is primarily responsible for detoxification and metabolism. The brain is the control center of the body, coordinating various functions. The heart is a crucial organ that pumps blood throughout the body. However, in terms of size, the skin surpasses all of these organs.
2. Where is the genetic code for each person stored?
- A. RNA
- B. DNA
- C. Nucleus
- D. Chromosomes
Correct answer: B
Rationale: The genetic code for each person is stored in DNA. DNA carries all the hereditary information, including unique traits and characteristics. RNA (Choice A) is involved in protein synthesis but does not hold the complete genetic code. The nucleus (Choice C) is a cellular organelle that houses the DNA, but it is not the genetic code itself. Chromosomes (Choice D) are structures made of DNA and proteins, but the genetic code is specifically encoded in the DNA molecule.
3. The doctor said he wanted to try other things before attempting an __________ procedure.
- A. Internal
- B. Painful
- C. Experimental
- D. Expensive
Correct answer: C
Rationale: The term 'invasive' refers to a procedure that involves entering the body, usually with a medical instrument or device. In the context provided, the doctor wants to try other non-invasive or less invasive options before resorting to an invasive procedure. 'Experimental' means untested or not yet proven to be effective, which aligns with the idea of exploring alternative methods before considering a more invasive approach. Choices A, B, and D are incorrect because they do not relate to the context of trying alternative procedures that are different from invasive ones.
4. Solve for x: 4x - 8 = 16.
- A. x = 7
- B. x = 7
- C. x = 4
- D. x = 6
Correct answer: D
Rationale: To solve the equation 4x - 8 = 16, first, add 8 to both sides to isolate 4x: 4x = 24. Then, divide by 4 to solve for x: x = 6. Therefore, the correct answer is D. Choice A, x = 7, is incorrect as the correct solution is x = 6. Choices B and C are duplicates of choice A and are also incorrect.
5. Throughout this passage the word suit means?
- A. A set of clothing to be worn together
- B. To be convenient or right for
- C. To request or appeal persistently
- D. One of the four categories in a deck of cards.
Correct answer: B
Rationale: In the passage, the word 'suit' is used in the context of card games, specifically in relation to playing cards of the same category. It refers to being convenient or right for a particular purpose in the game of Bridge. The other choices are incorrect because 'suit' in this passage does not refer to a set of clothing (option A), persistent requesting (option C), or one of the four categories in a deck of cards (option D). The passage clearly explains how the term 'suit' is used in the context of playing cards in the game of Bridge.
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