Human Anatomy

Trachea

The passage in which air moves from the mouth and nose to the lungs, part of the respiratory system that helps filter air.

Tracheal Rings

Provide structural support to the trachea, preventing it from collapsing and ensuring the airway remains open.

Heart

An organ that pumps blood throughout the body, ensuring circulation of oxygenated blood to tissues and organs.

Pericardium

A double-walled sac that surrounds the heart, protecting it and reducing friction during heartbeats.

Pulmonary Artery

Carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.

Inferior/Superior Vena Cava

Large veins that carry deoxygenated blood back to the heart; inferior from lower body, superior from upper body.

Pulmonary Veins

Carry oxygenated blood from the lungs back to the left atrium of the heart.

Aorta

The largest artery in the body that carries oxygenated blood from the left ventricle to the rest of the body.

Right and Left Atrium

Upper chambers of the heart; right atrium receives deoxygenated blood, left atrium receives oxygenated blood.

Right and Left Ventricle

Lower chambers of the heart; right ventricle pumps deoxygenated blood to the lungs, left ventricle pumps oxygenated blood to the body.

Diaphragm

Dome-shaped muscle below the lungs that plays a crucial role in breathing by facilitating lung expansion and contraction.

Lung (lobes R/L)

Organs responsible for gas exchange; right lung has three lobes, left lung has two lobes to accommodate the heart.