2.6 biology

Cards (23)

  • Red blood cells
    Cells in the blood that carry oxygen. They have a biconcave shape, no nucleus and contain haemoglobin.
  • White blood cells
    Cells in the blood that make up the immune system by destroying pathogens.
  • Oxyhaemoglobin
    The substance produced when oxygen binds with haemoglobin in the lungs.
  • Haemoglobin
    The substance that carries oxygen in red blood cells.
  • Biconcave
    The shape of red blood cells to increase their surface area.
  • Pathogens
    Disease causing microbes.
  • Lymphocytes
    White blood cell that produces antibodies.
  • Phagocytes
    White blood cell that engulfs pathogens during phagocytosis.
  • Antibody
    Protein that is produced by lymphocytes to destroy pathogens.
  • Valves
    Prevent the backflow of blood. They are found in veins and there are four in the heart.
  • Vena cava
    Largest vein in the body. Brings deoxygenated blood back to the heart from the body.
  • Aorta
    Largest artery in the body. Brings oxygenated blood from the heart to the body.
  • Pulmonary artery

    Artery that takes deoxygenated blood from the heart to the lungs.
  • Pulmonary vein
    Vein that takes oxygenated blood from the lungs back to the heart.
  • Coronary arteries
    Blood vessels that supply the heart muscle with blood.
  • Arteries
    Blood vessels that carry blood away from the heart under high pressure. They have a narrow central channel and thick, muscular walls.
  • Veins
    Blood vessels that carry blood back to the heart under a low pressure. They have thinner walls, a wider channel and contain valves.
  • Capillaries
    Thin walled blood vessels that have a large surface area, forming networks at tissues and organs to allow efficient exchange of materials.
  • Ventricle
    Chamber that pumps blood out of the heart.
  • Atrium
    Chamber that receives blood from the veins.
  • In the lungs
    Oxygen + haemoglobin -> oxyhaemoglobin
  • In the body cells
    Oxyhaemoglobin -> oxygen + haemoglobin
  • The left ventricle is thicker than the right ventricle as it has to pump blood all around the body.