HUMAN HEART

The heart is a muscular organ that pumps blood through the blood vessels of the circulatory system. The rhythmic contractions you see are what drive blood flow.

Structure Highlights:

🔴 Aorta: Main artery supplying oxygenated blood to the body.
🔵 Superior Vena Cava: Large vein bringing deoxygenated blood from the upper body.
🟣 Pulmonary Trunk: Carries deoxygenated blood from the heart to the lungs.
❤️ Left Ventricle: The thickest chamber that pumps oxygenated blood into the aorta.

🧠 NEET QUICK CHECK

Which node is known as the 'Pacemaker' of the heart?

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