BuyFindarrow_forward

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

In which of the following types of hypoxia is the oxygen pressure of the arterial blood ( Pa 0 2 ) usually normal?

1. Hypoxic hypoxia

2. Anemic hypoxia

3. Circulatory hypoxia

4. Histotoxic hypoxia

A. 1 only

B. 2 only

C. 3 and 4 only

D. 2, 3, and 4 only

Summary Introduction

Introduction:

Hypoxia is a condition that occurs when there is insufficient oxygen in the body to fulfill the cellular metabolic needs. Thus, in turn, anaerobic mechanisms are often activated, which lead to the production of dangerous metabolites in the body. For example, during exercise, lactic acid is produced. There are different types of hypoxia, such as hypoxic, anemic, circulatory, and histotoxic hypoxia.

Explanation

Justification/explanation for correct answer:

Option (d) is given as “anemic, circulatory, and histotoxic hypoxia.” When PaO2, that is, the partial pressure of oxygen in arterial blood is normal, but still hypoxic condition occurs, it is known as anemic hypoxia. In anemic hypoxia, the hemoglobin is not adequate enough to carry the oxygen molecules to the target organs. This could be due to insufficient hemoglobin, as in conditions, like anemia or hemorrhage, or if the hemoglobin is abnormal, like carboxyhemoglobin or methemoglobin.

In histotoxic anemia, tissue cells are hypoxic and, hence, are unable to utilize the oxygen delivered to them. The PaO2, that is, the partial pressure of oxygen in arterial blood is normal in this type of hypoxia. Also, in circulatory hypoxia, the partial pressure of oxygen is normal, but the amount reaching the tissues is not enough to meet the respiratory needs of the tissue. Hence, option (d) is correct.

Explanation for incorrect answers:

Option (a) is given as “hypoxic hypoxia...

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

A genetically engineered rice variety in existence today supplies sufficient beta-carotene to fight vitamin A d...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

Why don’t red dwarfs become giant stars?

Horizons: Exploring the Universe (MindTap Course List)

In what way has biotechnology had an impact on agriculture in the United States?

Human Heredity: Principles and Issues (MindTap Course List)

What nutrition-related concerns develop as a result of having HIV?

Nutrition Through the Life Cycle (MindTap Course List)