Levels of Oxygen, Carbon Dioxide, and PH in the Blood

question 35

Multiple Choice

Levels of oxygen, carbon dioxide, and pH in the blood are tested by

• A) pulmonary function test
• B) arterial blood gases
• C) ventilation-perfusion scanning
• D) spirometry

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Definitions:

Hemoglobin

A protein found in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.

Oxygen-Transporting Pigment

Molecules, such as hemoglobin in vertebrates, responsible for carrying oxygen from the respiratory organs to the rest of the body.

Hemocyanin

A copper-containing oxygen-transport protein found in the blood of some invertebrates, similar in function to hemoglobin in vertebrates.

Hemoglobin

A molecule found in red blood cells responsible for transporting oxygen from the lungs to the tissues of the body and bringing carbon dioxide back from the tissues to the lungs.