Question

State three differences between arteries and veins.

A) Arteries have thicker walls, carry oxygenated blood, and contain valves.
B) Veins have thicker walls, carry deoxygenated blood, and contain valves.
C) Arteries have thinner walls, carry deoxygenated blood, and lack valves.
D) Veins have thinner walls, carry oxygenated blood, and lack valves.

Answer 1

Arteries have thicker walls, carry oxygenated blood, and contain valves. Veins have thinner walls, carry deoxygenated blood, and contain valves.

Step-by-step explanation:

Arteries and veins are two types of blood vessels with distinct differences.

1. Arteries have thicker walls: Arteries have thicker smooth muscle layers to accommodate the changes in pressure from the heart.
2. Arteries carry oxygenated blood: Arteries generally carry oxygen-rich blood away from the heart.
3. Arteries contain valves: Some arteries, like the aorta, may have valves to prevent blood from flowing back into the heart.

On the other hand, veins:

1. Veins have thinner walls: Veins have thinner smooth muscle layers because they are farther away from the heart and carry blood at a lower pressure.
2. Veins carry deoxygenated blood: Veins primarily carry deoxygenated blood back to the heart.
3. Veins contain valves: Veins usually have valves that prevent the backflow of blood and help maintain proper blood flow.