Veins
After, it enters veins, large blood vessels with three layers (epithelial cells, smooth muscle, connective tissues), but thinner than layers of arteries.
The blood has less force by the time it comes to veins. Veins have three factors that can move the blood.
- Most of veins are near skeletal muscle, so the contraction of muscle can help push blood.
- They have valves that can help from blood to flow backward.
- Force blood toward the heart by breathing movement which use power in squeezing pressure against veins on chest.
- Most of veins are near skeletal muscle, so the contraction of muscle can help push blood.
- They have valves that can help from blood to flow backward.
- Force blood toward the heart by breathing movement which use power in squeezing pressure against veins on chest.