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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Vital capacity is the _______.

  1. a. amount of hemoglobin in a red blood cell
  2. b. amount of time a person can hold his or her breath
  3. c. maximum amount of air a person can move in and out with one breath
  4. d. amount of oxygen in an exhalation

Summary Introduction

Concept introduction: The maximum amount of air that the lungs can hold is an average 5.7 liters in men and 4.2 liters in women. As the lungs never deflate, the air inside them is always a mix of freshly inhaled air and the stale air that left in the previous exhalation.

Explanation

Reasons for the correct answer:

Vital capacity is the maximum volume of air that can move in and out in one respiratory cycle. It is one of the measures of lung health.

Option c. is given as “maximum amount of air a person can move in and out with one breath”. As vital capacity is the maximum amount of air a person can move in and out with one breath, option c. is correct.

Reason for the incorrect answer:

Option a. is given as “amount of hemoglobin in a red blood cell”.

Hemoglobin is the oxygen transport metallo protein in the red blood cells. A healthy person has 12 to 16 grams of hemoglobin in every 100ml of blood...

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