Label the heart

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In this interactive you can label parts of the human heart. Drag and drop the text labels onto the heart diagram. Once each label is correct, you will see how the blood flows to and from the heart.

Transcript

Instructions

Correctly label the parts of the heart to see how blood flows through the heart

Parts of the heart

Vena Cava
Carries deoxygenated blood from the body to the heart

Semilunar Valve
Flaps that prevent backflow of blood

Left Atrium
Receives oxygenated blood from the lungs

Left Ventricle
Region of the heart that pumps blood to the body

Pulmonary Artery
Carries blood to the lungs

Right Ventricle
Region of the heart that pumps blood to the lungs

Pulmonary Vein
Carries blood from the lungs

Right Atrium
Segment of the heart that receives deoxygenated blood

Aorta
The main artery carrying blood to all parts of the body

Let’s now look at how blood flows through the heart.

Blood enters the heart through two large veins, the posterior (inferior) and the anterior (superior) vena cava, carrying deoxygenated blood from the body into the right atrium.

Blood flows from the right atrium into the right ventricle through the tricuspid valve. When the ventricles are full, the tricuspid valve shuts to prevent blood flowing backward into the atrium.

Blood leaves the heart through the pulmonic valve, into the pulmonary artery and flows to the lungs.

The pulmonary vein carries oxygen-rich blood from the lungs into the left atrium.

Blood flows from the left atrium into the left ventricle through the open mitral valve. When the ventricles are full, the mitral valve shuts to prevent blood from flowing backward into the atrium.

Blood leaves the heart through the aortic valve, into the aorta and to the rest of the body.

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