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This major vein enters the top part of the right atrium, channeling oxygen-poor blood collected from the upper body (like the head and arms).

Superior Vena Cava

As the body's main and largest artery, it arises from the left ventricle and arches over the heart, distributing oxygen-rich blood to all body systems.

Aorta

This vessel originates from the right ventricle and splits to carry oxygen-poor blood towards the lungs to get refilled with oxygen.

Pulmonary Artery

These veins transport freshly oxygenated blood from the lungs back to the heart, specifically emptying into the left atrium.

Pulmonary Vein

Or Bicuspid Valve. This two-flap valve controls the opening between the left atrium and left ventricle, letting oxygen-rich blood enter the ventricle while stopping any back flow into the atrium.

Mitral Valve

Positioned at the junction of the left ventricle and the aorta, this valve opens to allow oxygen-rich blood to be pumped out to the body and snaps shut to prevent it from returning to the ventricle.

Aortic Valve

Situated between the right ventricle and the pulmonary artery, this valve opens to let blood flow to the lungs and closes to stop it from flowing backward into the ventricle.

Pulmonary Valve

This is the upper-right receiving chamber of the heart. It collects all the returning oxygen-depleted blood from the body before passing it down to the right ventricle.

Right Atrium

This three-flap valve acts as a one-way door between the right atrium and right ventricle, allowing oxygen-poor blood into the ventricle and preventing it from backing up into the atrium.

Tricuspid Valve

This is the powerful, lower-left pumping chamber with the thickest muscle wall. It receives oxygen-rich blood from the left atrium and forcefully expels it through the aortic valve into the aorta to supply the entire body.

Left Ventricle

This large vein brings oxygen-poor blood from the lower parts of the body (like the legs and abdomen) into the bottom section of the right atrium.

Inferior Vena Cava

The lower-right pumping chamber, it receives oxygen-poor blood from the right atrium and pushes it out through the pulmonary valve towards the lungs.

Right Ventricle

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The primary function of the heart is to act as a highly efficient pump within the circulatory system. It continuously pumps blood throughout the body, performing two major tasks:

Pulmonary Circulation: It receives deoxygenated blood (blood low in oxygen and high in carbon dioxide) that has returned from circulating through the body and pumps it to the lungs. In the lungs, the blood releases carbon dioxide and picks up fresh oxygen. 

Systemic Circulation: It receives the newly oxygenated blood from the lungs and pumps it out through the arteries to supply oxygen and essential nutrients to all tissues and organs of the body. It also helps transport waste products away from the tissues back towards organs like the lungs and kidneys for removal.

What is its function?


The heart is a vital, fist-sized muscular organ located in the chest, slightly to the left of the sternum (breastbone) and between the lungs. It is primarily composed of specialized muscle tissue called cardiac muscle. Internally, it's divided into four compartments or chambers (two atria and two ventricles).



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MagiCON - Heart

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Website • www.linktr.ee/medicrafts

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General Trias, Cavite

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The Heart

Parts of the Heart