Lymphatic System

They take up oxygen in the lungs and deliver it to cells throughout the body.

• red blood cells

• white blood cells

Red blood cells also absorb _________________________ in the body and transport it to the lungs, where it is released from the body.

• oxygen

• carbon dioxide

An ________________ carries blood away from the heart. It is a thick-walled and muscular vessel.

• artery

• vein

A vein carries blood back to the heart. It has thinner walls than arteries. (True or False)

• True

• False

A __________________ is a tiny vessel where substances are exchanged between the blood and body cells.

• capillary

• vein

• artery

A force with which ventricles of the heart contract is what creates _______________________________.

• blood pressure

• heart beat

Its main function is to transport components of blood back into the circulatory system.

• lymphatic system

• cardiovascular system

White blood cells fight off diseases. (True or False)

• True

• False

Plasma help clot wounds. (True or False)

• True

• False

________________________ is the liquid part of the blood.

• White blood cells

• Platelets

• Plasma