BLOOD VESSELS AND BLOOD

What makes up around 55% of the blood?

• Plasma

• Red Blood Cells

• White Blood Cells

• Platelets

Which cell releases antibodies to the blood?

• phagocytes

• lymphocytes

• platelets

Which blood vessel has valves to prevent the back-flow of blood?

• Veins

• Arteries

• Capillaries

Which is the smallest of the 3 blood vessels?

• Veins

• Arteries

• Capillaries

Which blood vessels take blood AWAY from the heart?

• Veins

• Arteries

• Capillaries

What is the function (job) of the platelets?

• To form clots (i.e. scabs) when you have cuts and grazes.

• To transport oxygen to the muscles

• To carry dissolved sugars.

• To produce antibodies

Red Blood Cells are formed in our ....

• Bone marrow

• Liver

• Muscles

• Heart

The heart pumps blood throughout the body through a closed system of tubes. These tubes that carry the blood are called blood vessels. There are three types of blood vessels: (a)   , veins,and capillaries

What carry blood from the body cells back to the heart. This blood contains waste materials.

• Veins

• Arteries

• Capillaries

• Vines

If laid end to end, your blood vessels would stretch out to about _______ km!

(About 4 times the distance around the equator!)

• 240,000 Km

• 15,000 Km

• 161,000 Km

• 123,450 Km