Blood and the circulatory system

HideShow resource information
  • Created by: revising
  • Created on: 26-03-13 12:01
View mindmap
  • Blood and the circulatory system
    • Red blood cells
      • Transport blood from lungs to rest of body.
      • No nucleus so can be packed with haemoglobin- a substance that binds with oxygen.
      • Have a biconcave shape to give them a large surface area for exchanging oxygen.
    • White blood cells
      • Help fight infection by protecting body against attack from microorganisms.
    • Plasma
      • This is the liquid that carries nutrients (e.g. glucose and amino acids), antibodies, hormones and waste (e.g. carbon dioxide and urea.)
    • Platelets
      • Small fragments of cells that help blood to clot at the site of a wound.
    • Double circulatory system
      • Two circuits joined together.
        • The first pumps deoxygenated blood to the lungs to take in oxygen. The blood returns to the heart.
          • The second pumps oxygenated blood around the body. Blood gives up oxygen at body cells and th deoxygenated blood returns to heart to be pumped out to lungs again.


No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Circulation resources »