The lymphatic system keeps our tissues from retaining fluid and houses many of the key components of the immune system, like lymph nodes. Learn how this underappreciated body system is organized and how it functions.

This video shows a close up view of bone anatomy and how blood is delivered to bone.

A physician explains coronary artery disease or CAD in this video. He covers the main type of damage that can occur to the coronary artery, namely atherosclerosis. The video also covers some of the serious consequences of CAD such as myocardial infarction (heart attack) and heart failure.

This animation provides a very brief overview of body anatomy, from the entire body down to subcellular organelles.