Blood vessels are tubes that transport blood from one part of the human body to another. Arteries are blood vessels that carry blood away from the heart. Arteries branch out into small vessels called arterioles. The arterioles branch to form tiny vessels with thin walls called capillaries. Capillaries are the sites for the exchange of respiratory gases, nutrients and wastes. Capillaries join with another to form venules. Venules join together to form veins. Veins transport blood back to the heart. It estimated that if all the blood vessels in a human body were to be arranged end to end, the vessels would measure about 100 000 km in length.
Table 1.Comparison between arteries, capillaries and veins.
Thank you for sharing such wonderful information!In my opinion, Keep a healthy life by consuming healthy food and doing exercise regularly is the best healthy formula.
ReplyDeleteHospital Jobs