Blood

Blood is made up of four parts:

Part Function
Red blood cells Transporting __________ from the __________
Plasma Carries dissolved foods from the __________ and __________ to the __________
Platelets Form a __________ (scab), together with __________ from the plasma at the site of a wound .
White blood cells __________ of the body. They produce __________ and remove microbes and dead tissue.

Blood travels through the blood vessels, of which there are 3:

Blood Vessel Description
Arteries
  1. __________ elastic walls
  2. Carry blood away from the __________
  3. __________ pressure - __________ flow
  4. __________ pulse
  5. No Valves
Veins
  1. __________ walled
  2. Carry blood into the __________
  3. __________ pressure - __________ flow
  4. __________ pulse
  5. Has __________ to prevent back flow
Capillaries
  1. Very small blood vessels between __________
  2. Allows __________ of substances needed by the cells and the removal of __________ products

The heart has its own blood vessels known as the coronary blood vessels. They provide the oxygen and glucose to the heart and remove the waste, just like any other muscle. If there is a blockage of the coronary artery then the heart will not get the oxygen it needs and so stop pumping. This is known as a '__________'.