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Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Quiet Breathing: Understanding the Basics** **Question:** Which of the following statements about quiet breathing is **TRUE**? In quiet breathing, **Options:** 1. inspiration is passive and expiration involves muscular contractions. 2. inspiration involves muscular contractions and expiration is passive. 3. inspiration and expiration involve muscular contractions. 4. None of these responses are true. 5. inspiration and expiration are both passive processes. To comprehend the mechanics of quiet breathing, it’s important to understand that during quiet (or resting) breathing, inspiration is an active process driven by the contraction of the diaphragm and intercostal muscles, while expiration is a passive process that occurs as the muscles relax and the elastic recoil of the lungs pushes air out. So, the correct answer is: - inspiration involves muscular contractions and expiration is passive.
Transcribed Image Text:**Quiet Breathing: Understanding the Basics** **Question:** Which of the following statements about quiet breathing is **TRUE**? In quiet breathing, **Options:** 1. inspiration is passive and expiration involves muscular contractions. 2. inspiration involves muscular contractions and expiration is passive. 3. inspiration and expiration involve muscular contractions. 4. None of these responses are true. 5. inspiration and expiration are both passive processes. To comprehend the mechanics of quiet breathing, it’s important to understand that during quiet (or resting) breathing, inspiration is an active process driven by the contraction of the diaphragm and intercostal muscles, while expiration is a passive process that occurs as the muscles relax and the elastic recoil of the lungs pushes air out. So, the correct answer is: - inspiration involves muscular contractions and expiration is passive.
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