Updated Biology Courses cardella

General Biology
Prof. Bryan Cardella, M.Ed.

ap biology eaton

AP Biology 
Dr. Carleen Eaton, M.D.

Loading video...
This is a quick preview of the lesson. For full access, please Log In or Sign up.
For more information, please see full course syllabus of Biology
Bookmark & Share Embed

Share this knowledge with your friends!

Copy & Paste this embed code into your website’s HTML

Please ensure that your website editor is in text mode when you paste the code.
(In Wordpress, the mode button is on the top right corner.)
  • - Allow users to view the embedded video in full-size.
Since this lesson is not free, only the preview will appear on your website.
  • Answer Engine

  • Study Guides

The Respiratory System

  • To survive, animals must obtain oxygen and dispose of carbon dioxide. This exchange of gases between an organism and its environment is accomplished by the process of respiration.

  • All animals ultimately rely on diffusion for gas exchange, but only the simplest and smallest organisms use diffusion alone. Complex animals have evolved a number of different adaptations for gas exchange. These specialized structures include the skin, tracheal tubes, gills, and lungs.

  • In this Lesson, we'll explore the different types of respiratory systems and the components of these systems. We’ll also study the structure and physiology of the human respiratory system, including the mechanism and control of breathing.

  • We’ll conclude by looking at the role of breathing in the exchange of oxygen and carbon dioxide between the air and the circulatory system, and how these gases are transported throughout the body.


Please sign in to participate in this lecture discussion.

Resetting Your Password?

Start Learning Now

Our free lessons will get you started (Adobe Flash® required).
Get immediate access to our entire library.

Membership Overview

  • Available 24/7. Unlimited Access to Our Entire Library.
  • Search and jump to exactly what you want to learn.
  • *Ask questions and get answers from the community and our teachers!
  • Practice questions with step-by-step solutions.
  • Download lecture slides for taking notes.
  • Track your course viewing progress.
  • Accessible anytime, anywhere with our Android and iOS apps.