Question

draw the of human heart , mention protein in blood . define arteries and vein. explian human circulatory system ?

Answer 1

Arteries-The arteries are the blood vessels that deliver oxygen-rich blood from the heart to the tissues of the body.
Vein-In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood toward the heart

Answer 2

arteries carry blood away from hear and have thick wall.the oarta is the biggest artery in the human body.given below is the image of heart.