Stay three common blood ressel and their function?

1. Arteries: Arteries are blood vessels that carry oxygen-rich blood away from the heart to the rest of the body. They have thick, muscular walls that help to maintain high pressure as blood is pumped through them.

2. Veins: Veins are blood vessels that carry oxygen-poor blood back to the heart from the rest of the body. They have thinner walls than arteries and contain valves to prevent blood from flowing backwards.

3. Capillaries: Capillaries are tiny blood vessels that connect arteries and veins. They are responsible for the exchange of oxygen, nutrients, and waste products between the blood and tissues. Capillaries have thin walls that allow for easy diffusion of substances.

1. Arteries:
- Function: Carry oxygenated blood away from the heart to the rest of the body.
- Characteristics: Thick, muscular walls that allow for pulsating blood flow, high pressure.

2. Capillaries:
- Function: Allow exchange of nutrients, oxygen, and waste products between blood and tissues.
- Characteristics: Very thin walls made of a single layer of cells, branched and extensive network throughout the body.

3. Veins:
- Function: Carry deoxygenated blood back to the heart.
- Characteristics: Thin walls with less muscle than arteries, lower pressure, contain valves to prevent backflow of blood.