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Cardiopulmonary Anatomy & Physiolo...

7th Edition
Des Jardins + 1 other
ISBN: 9781337794909

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Chapter
Section
BuyFindarrow_forward

Cardiopulmonary Anatomy & Physiolo...

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

Between 20 and 60 years of age, the RV/TLC ratio

A. Increases from 20 to 25 percent

B. Increases from 20 to 30 percent

C. Increases from 20 to 35 percent

D. Increases from 20 to 40 percent

Summary Introduction

Introduction:

Aging causes many effects on the body. Similarly, the lung volumes and capacities are also affected. The total lung capacity generally remains the same.

Explanation

Justification for the correct answer:

Option (C) states that between 20 and 60 years of age, the RV/TLC ratio increases from 20 to 35 percent. Although the overall lung capacity does not change, but the residual volume (RV) and TLC’s ratio are impacted by age. This is because RV increases with age. The ratio increases from 20 to 35 % from 20 to 60 years of age. Hence, option (C) is correct.

Justification for the incorrect answers:

Option (A) states that between 20 and 60 years of age, the RV/TLC ratio increases from 20 to 25 percent. This is incorrect, as with age, the RV/TLC ratio increases from 20 to 35 percent...

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