Here's a breakdown of how it works:
* Heart: The heart pumps blood throughout the body.
* Blood Vessels:
* Arteries: Carry oxygenated blood from the heart to the body.
* Veins: Carry deoxygenated blood back to the heart.
* Capillaries: Tiny blood vessels that connect arteries and veins, allowing for exchange of oxygen, nutrients, and waste products between the blood and the body's tissues.
* Blood: Contains red blood cells (carrying oxygen), white blood cells (fighting infection), platelets (helping with clotting), and plasma (carrying nutrients and waste products).
The circulatory system works like a delivery network, ensuring that every cell in the body receives the oxygen and nutrients it needs to function.
