Despite slightly older animation, this fascinating video shows the path each red blood cell takes as it carries oxygen throughout the body. From the first pump of the heart pushing red blood cells to the lungs to pick up oxygen to the...

Where is the heart? What does it do? What other organs help it carry out its function? Here is a hearty little video that answers such questions! With a casual tone and colorful animation, elementary and middle schoolers will fall in...

A fascinating interactive laboratory in which simulations allow students to explore techniques of cardiac diagnosis and learn about cardiac structure/function. Excellent supporting information and resources for teachers and students.

Kids can feel their hearts working hard to help their bodies healthy! Watch the video featuring Count von Count, then ask children to show you where their hearts are. [2:21]

This short movie gives you a fun way to learn the basics of the heart and how the circulatory system works. From KidsHealth.

Get an overview of the function of the whole circulatory system by watching this video. [2:29]

See how Atherosclerosis (Fat in the blood vessel wall) hardens the arterial wall and makes it harder for blood to flow through. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:54]

Learn the difference between blood flow (volume/time) and perfusion (volume/time/amount of tissue). Rishi is a pediatric infectious disease physician and works at Khan Academy. [10:31]

See how pressure, flow, and resistance relate to one another and how they each affect the human body. Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:50]

See how increasing resistance in the blood vessels can cause blood pressure to rise over time. Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:25]

Find out what a systolic and diastolic blood pressure mean. Rishi is a pediatric infectious disease physician and works at Khan Academy. [6:21]

See how Atherosclerosis (fat in the blood vessel wall) hardens the arterial wall and makes it harder for blood to flow through. Rishi is a pediatric infectious disease physician and works at Khan Academy. [8:59]

Find out how left ventricular end-diastolic pressure helps you make an educated guess about preload. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:23]

Animated interative that teaches young readers about the circulatory system, anatomy of the heart, and how the heart functions.

This lesson will identify the main structures and function of the cardiovascular system as one of the 11 organ systems of the human body. It is 1 of 2 in the series titled "Cardiovascular System."

This Khan Academy resource is a video about tetralogy of fallot which is a form of a cyanotic heart disease.

An overview of shock or tissue perfusion and how it relates to the cardiovascular system. Hypovolemic shock, cardiogenic shock, obstructive shock, and distributive shock are explained.

An explanation of neurogenic shock, its symptons and treatment are discussed in this tutorial.

Welcome to the lymphatic system! Find out why we need it, and how it interacts with our blood vessels. [9:31]

This video explains the basics of shock and the four different types. [7:14]

This lesson will explain the steps that occur when your heart muscle contracts. It will investigate the cardiac cycle and the cardiac conduction system. It is 1 of 2 in the series.

Provides 12 fascinating facts about the human heart.