Figure 397

Respiratory unit. (Redrawn from Miller WS: The Lung. Springfield, Ill: Charles C Thomas, 1947.)

and the pulmonary blood occurs through the membranes of all the terminal portions of the lungs, not merely in the alveoli themselves. All these membranes are collectively known as the respiratory membrane, also called the pulmonary membrane.

Figure 39-6

Oxygen and carbon dioxide partial pressures in the various portions of normal expired air.

Alveolar sacs

Was this article helpful?

0 0
Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

Get My Free Ebook

Post a comment