Answer to Question #261765 in Human Anatomy and Physiology for Saleh

Question

1. Describe the differences between artery and vein.

2. Describe the structure of Medium-sized A.

3. Describe the structure of Capillaries and location. 

Answer 1

Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.

Capillaries are very thin, approximately 5 micrometers in diameter, and are composed of only two layers of cells—an inner layer of endothelial cells and an outer layer of epithelial cells. They are so small that red blood cells need to flow through them single file.