Question

What does the circulatory system comprises of?

Answer 1

• The circulatory system comprises of blood, blood vessels and the heart.
• Blood is the fluid which helps in transportation of various substances to different parts of the body.
• Blood has two important components - i) fluid component (plasma) ii) cellular component (RBCs, WBCs, Platelets).
• Blood vessels are the tubular structures inside which the blood flows and reaches different parts of the body.
• Heart is a muscular organ which pumps the blood to different parts of the body.