Find out exactly why air goes in and out of the lungs. [12:59]

Video lecture helps in the understanding of asthma by learning the mechanics of breathing, and how breathing air in is quite different from breathing air out. [12:03]

Every time you take a breath, oxygen makes it way into your lungs. Follow along on that journey! Rishi is a pediatric infectious disease physician and works at Khan Academy. [9:36]

Take a glimpse into your lungs to understand what happens when you have an asthma attack. [4:40]

Find out how to calculate exactly how much oxygen is deep down inside your lungs. Rishi is a pediatric infectious disease physician and works at Khan Academy. [7:06]

Learn here about what happens to the lungs and the body during an athsma flare-up. [2:26]

Find out how to calculate exactly how much oxygen is deep down inside your lungs! [7:5]

Every time you take a breath, oxygen makes it way into your lungs. Follow along on that journey. [9:36]

Do you know how your body controls your breathing rate? In this video, learn how special cells that are in your brain senses levels of C02 an pH. [7:43]

This video lesson from Khan Academy and the Association of American Medical Colleges provides study content for the MCAT. This resource discusses sleep disorders that negatively impact breathing during sleep.

Narrated animation showing how the lungs work to allow us to breathe and exchange oxygen for carbon dioxide. (Length: 1 min. 18 sec.)

Follow the path that oxygen takes as enters the body with this video. [1:30]

This lesson will describe the steps involved in the respiratory cycle. It is 1 of 6 in the series titled "Respiratory Cycle."

Huffing and puffing after sprinting to the bus? Discover the scientific explanation for why we breathe heavy under certain circumstances. [1:59]

Let science explain why we sneeze and cough. Understand why sometimes it hurts when we cough. [1:26]

When you exercise you may notice that you are breathing heavily, what causes your body to this? This video lecture explains how your nervous system controls parts of your breathing to help maintain homeostasis. Understand how...