Human body

The circulatory system is made up of the blood, blood vessels and the _____

• Veins

• Hearts

• Plasma

• Red blood cell

An average person has _____ litres of blood

• 5.4-4.3

• 6.5-5.6

• 3.5-2.5

• 4.5-5.5

_____ are blood vessels which connect both arteries and veins

• Capillaries

• Valve

• Ventricle

• Aorta

______ is the fluid portion of the blood

The largest artery that is directly connected to the heart ________