Structure of Human Blood

There are three types of human blood vessel: artery, vein, cappilary

Human blood vessels consists of 3 types:

1.Artery

• Carry oxygenated blood away from the heart to all parts of body except pulmonary artery

2.Cappilary

• Sites for exchange of respiratory gases, nutrients, and waste between blood
• The smallest blood vessels taht joints artery and vein

3. Vein

• Transport deoxygenated blood from all parts of body back to the heart except pulmonary vein

NOTES: 

• Artery branch out into smaller vessels called arterioles
• Arterioles branch to form cappilaries.
• Cappilary join with one another to form venules
• Venules join together to form vein