The average person's heart beats about three billion times during their lifetime. In this circulatory system video, learners briefly see the difference between an open and closed circulatory system. The rest of the video focuses on the...

Compare a variety of animals' circulatory systems to the human circulatory system. Paul Andersen uses his SMART Board to show the differences between two, three, and four chamber hearts, focusing on the human heart. 

Medicine has gone high tech. But how do the new, less invasive diagnostic tools work? An engaging short video sheds light on how integrated photonics is revolutionizing the medical sensor industry.

Have you ever wondered what causes tumors to grow? VEGF is a very important factor because it is a hormone that causes blood vessels to grow and is triggered by cancer cells to increase blood supply to a tumor. Viewers learn about the...

How do cancer cells grow? With the right resources, the uncontrolled growth of cancer cells into tumors sometimes happens rapidly. The cancer then metastasizes to other areas of the body. The informative video helps scholars discover...

Heart disease causes more deaths in both men and women in the United States than any other factor, buy many people don't fully understand what causes a heart attack. A brief animation demonstrates the slow buildup of plaque, a blockage...

A stroke can severely impact a patients' speech, motor skills, and quality of life—if they survive the event in the first place. Learn what happens to the brain during a stroke, and how you can help if someone you see is experiencing a...

Did you know that blood vessels can constrict or expand in response to extreme weather? The 27th video in a series of 47 about the human body viewers learn interesting facts about blood vessels. The narrator goes over the three layers of...

Eat less sugar; you are sweet enough already. The video explains how the body processes glucose and fructose, then highlights the differences and results of both. It also includes suggestions for staying healthy. 

Meet Lindsey, a mechanical engineer who has taken up bioengineering. She uses her skills to model blood vessels and their interaction with regenerating tissues. She continues to discuss the future of bioengineering in an informative video.

If humans can live without one kidney, how important can they really be? Investigate the vital role these organs play in filtering our blood, removing waste, and managing our bodies' water supply with this short animated video.

Did you know that the biggest organ in the human body isn't the brain, the liver, or even the lungs? It's the skin. Follow along with this short video as it explores the structure of human skin and its amazing ability to...

Is there an answer for cancer? Your AP biologists will be inspired by this lecture on how the foods that we eat stimulate or inhibit the growth of blood vessels, which in turn, bring health or disease to the human body. Research is...

A model of a torso in a high school classroom is displayed while the teacher points out various arteries going from the heart to the GI tract and down to the legs. She then looks at the veins coming back up and some superficial vessels....

Learn some important differences between arteries (high pressure/low volume) and veins (low pressure/high volume). Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:09]

We begin our look at how blood gets around your body. In this episode, we look at the basic three-layer structure of your blood vessels. We review how those structures differ slightly in different types of vessels. We will also follow...