Khan Academy: Why We Need a Lymphatic System

[Free Registration/Login may be required to access all resource tools.] Almost all of us have had a sore throat at some time. Maybe you had your tonsils out when you were younger? Why? Your tonsils are two lumps of tissue that work as...

A detailed account of human ventilation through the pulmonary system. [20:33]

Khan Academy's Vishal Punwani presents a lesson about how the heart and body heal following a heart attack, or myocardial infarction. [7:42]

Dr. David Agus, a medical professor, discusses thinking systemically about cancer and other things, for example, by making other parts of the body healthier so the cancer can't metastasize.

This Khan Academy resource is a video about Thermoregulation in the lungs and how it can affect the body.

This is a ten-question quiz over the Lymphatic system.

The human body requires a multilayered immune system to keep it running smoothly. The two main classes of the immune system are the innate immune system and the adaptive immune system, or "acquired immunity". This article discusses the...

This Khan Academy resource is an article about adaptive immunity.

This resource from Khan Academy provides information about aortic dissection, a circulatory system disease. Students will learn the basic facts about this disease.

This video lesson from Khan Academy provides information about hypertension, a circulatory system disease. Students will learn about the effects on the heart.