Chapter 20, Problem 2RQ

### Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

Chapter
Section

### Cardiopulmonary Anatomy & Physiolo...

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

# If an individual fully inhales to a total lung capacity of 4.5 L at sea level (760 mm Hg) and dives to a depth of 66 feet, the lungs will be compressed to aboutA. 1.0 LB. 1.5 LC. 2.0 LD. 2.5 L

Summary Introduction

Introduction:

There is an increase in the levels of oxygen, while the blood pressure and heart rate are reduced along with the heart output. Environments with high pressure have a considerable effect on the cardiopulmonary system of the body. The pressure experienced is calculated by Boyle’s law that governs the compression in the lungs when a diver descends.

Explanation

Option (b) is given as 1.5 L.

Given,

Total lung capacity (V1) = 4.5 L

Pressure at total lung capacity (P1) = 760 mm, Hg = 1 atm

Pressure at 66 feet (P2) = 3 atm

So,

P1V1=P2V2V2=P1V1P2=1Ă—4

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