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The heart pumps blood throughout the body, dealing with both the systemic and pulmonary circulation.

Arteries carry oxygenated blood away from the heart to the body tissues, except for the pulmonary arteries.

Veins carry deoxygenated blood towards the heart from the tissues, except for the pulmonary veins.

Capillaries are the site of exchange of gases, nutrients, and waste products between blood and tissues.

Red Blood Cells carry oxygen from the lungs to the body's tissues and take carbon dioxide back to the lungs to be expelled.

White Blood Cells are involved in protecting the body against infectious disease and foreign invaders.

Platelets form clots to stop bleeding and are essential in the body's ability to repair damaged blood vessels.

Blood Plasma is the liquid component of blood that carries cells and proteins throughout the body.

The Sinoatrial Node generates electrical impulses that set the rhythm for the heart, acting as the natural pacemaker.

The Atrioventricular Node relays electrical signals from the atria to the ventricles, creating a delay to ensure proper timing of contractions.

The Aorta is the main artery that carries oxygenated blood from the left ventricle to the rest of the body.

Pulmonary Arteries carry deoxygenated blood from the right ventricle to the lungs for oxygenation.

Pulmonary Veins carry oxygenated blood from the lungs to the left atrium of the heart.

The Vena Cava are the two largest veins in the body that carry deoxygenated blood into the right atrium of the heart from the systemic circulation.

Coronary Arteries supply oxygen-rich blood to the myocardium, the muscular tissue of the heart.

Coronary Veins remove deoxygenated blood from the myocardium, returning it to the right atrium.

The Tricuspid Valve prevents backflow of blood from the right ventricle to the right atrium during ventricular contraction.

The Bicuspid Valve, also known as the Mitral Valve, prevents backflow of blood from the left ventricle to the left atrium.

The Pulmonary Valve prevents backflow of blood from the pulmonary artery to the right ventricle after contraction.

The Aortic Valve prevents backflow of blood from the aorta into the left ventricle after contraction.

The Pericardium is a double-walled sac that contains the heart and the roots of the great vessels.

The Endocardium lines the inside of the heart's chambers and valves, made up of a layer of endothelial cells.

The Myocardium is the muscular layer of the heart wall responsible for the pumping action.

The Epicardium is the outermost layer of the heart wall and functions as a protective layer.

The Septum refers to the walls that separate the right and left sides of the heart, preventing oxygen-rich and oxygen-poor blood from mixing.

Chordae Tendineae are tendinous strands that anchor the heart's valves to the papillary muscles, preventing valve prolapse during contraction.

Papillary Muscles attach to the cusps of the atrioventricular valves via the chordae tendineae and contract to prevent inversion of these valves.

The Lymphatic System returns interstitial fluid to the blood, maintains fluid balance, and is involved in immune responses.

The Conducting System controls the heartbeat, consisting of the sinoatrial node, atrioventricular node, bundle of His, bundle branches, and Purkinje fibers.