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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

Solutions

Chapter
Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909
Textbook Problem

Which of the following protects the lungs from excessive inflation?

A. Juxtapulmonary-capillary receptors

B. Hering-Breuer inflation reflex

C. Deflation reflex

D. Irritant reflex

Summary Introduction

Introduction:

The major areas, namely, central chemoreceptors and peripheral chemoreceptors, send impulses to the respiratory centers that activate specific ventilatory patterns. There are certain other factors apart from these major areas that affect the breathing—Hering-Breuer inflation reflex, juxtapulmonary-capillary receptors, deflation reflex, and irritant reflex.

Explanation

Justification for the correct answer:

Option (b) is given as “Hering–Breuer inflation reflex.” It is generated by stretch receptors, which become excited when the over inflation of lungs takes place. The receptors send signals that travel to the respiratory component in the medulla. This causes the cessation of inspiration. It protects the lungs from excessive inflation in this way. Hence, option (b) is the correct answer.

Justification for the incorrect answers:

Option (a) is given as “Juxtapulmonary-capillary receptors.” The stimulation of these receptors results in rapid, shallow breathing...

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