2.65a Blood vessels

1. All arteries take blood away from the heart. There blood is under high pressure. Blood is being delivered to another organ through arteries.
2. All veins take blood to the heart. Veins contain low pressured blood. Blood in veins fro an organ.
3. Between the artery and vein, the blood vessels travel through the organ. This is where we have exchange where the contents of the cell is exchanged with the blood's contents.
4. The blood vessels in an organ are called capillary.
5. Substances go into and out of the cell. e.g. carbon dioxide and oxygen. Nothing goes into the vein or the artery, nor does it go out. The place for exchange is the capillary.