HESI A2
HESI A2 Version 1 Anatomy and Physiology Questions
Question 1 of 5
Which structure of the nervous system carries action potential in the direction of a synapse?
Correct Answer: B
Rationale: The correct answer is B: axon. The axon is a long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body towards other neurons or target cells, such as muscles or glands, including towards a synapse. The cell body contains the nucleus and other organelles but does not carry action potentials. While a neuron is the overall structural and functional unit of the nervous system, the axon is specifically responsible for transmitting action potentials.
Question 2 of 5
Which of the following epithelial types is correctly matched with its major function?
Correct Answer: D
Rationale: The correct answer is D. Simple columnar epithelium is matched correctly with its major function of secretion or absorption. Simple squamous epithelium is best suited for diffusion due to its thin structure, while stratified squamous epithelium is mainly for protection against mechanical stress and pathogens. Stratified squamous epithelium does not function primarily in diffusion. Therefore, understanding the structure and function relationship of different epithelial types is crucial for correctly identifying their major functions.
Question 3 of 5
Which structure is located on the sternum?
Correct Answer: A
Rationale: The correct answer is the Xiphoid bone. The xiphoid process is a small cartilaginous extension at the lower end of the sternum. The Sesamoid bone is a small bone embedded within a tendon, typically found in joints. The Hyoid bone is a U-shaped bone in the neck that does not articulate with any other bone. 'Ossified' means turned into bone or hardened, but it does not specifically refer to a structure located on the sternum.
Question 4 of 5
When assessing a female patient who describes herself as a strict vegetarian, the nurse notes that she has a yellow tone to her skin. The nurse should ask the client if she has eaten large amounts of which foods?
Correct Answer: A
Rationale:
Question 5 of 5
Why are the hydrochloric acid and digestive enzymes from the stomach unable to digest the stomach itself?
Correct Answer: C
Rationale: