HESI A2 Anatomy & Physiology EXAM READINESS GUIDE QUESTIONS & ANSWERS

HESI A2 Anatomy & Physiology EXAM READINESS GUIDE QUESTIONS & ANSWERS

1. Which layer of the heart wall is responsible for its
contractile function?
A) Endocardium
B) Myocardium
C) Epicardium
D) Pericardium
 Correct Answer: B) Myocardium
 Rationale: The myocardium is the muscular layer of the
heart wall responsible for its contractile activity, enabling the
heart to pump blood.
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 2. Which component of the nervous system is primarily
responsible for the "fight or flight" response?
A) Somatic nervous system
B) Sympathetic nervous system
C) Parasympathetic nervous system
D) Enteric nervous system
 Correct Answer: B) Sympathetic nervous system
 Rationale: The sympathetic nervous system, part of the
autonomic nervous system, activates bodily responses
required for the "fight or flight" reaction.
---
 3. What is the main site of gas exchange in the respiratory 

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