Blood vessels

    Cards (7)

    • Vein ➡️ into the heart, deoxygenated blood
    • Artery ➡️ away from the heart, oxygenated oxygen
    • Types of blood vessels:
      • Artery
      • Vein
      • Capillary
    • Arteries
      • layers of muscle in the walls makes them strong
      • elastic fibres allow them to stretch
      • this helps the artery withstand the high pressure created by the heart
    • Veins
      • lumen is wide to allow the low pressure blood to flow through
      • have valves to ensure the blood flows in the right direction
    • Capillaries
      • one cell thick walls, for short diffusion path
      • permeable walls, so substance can move across
    • Blood vessels
      A) Lumen
      B) Elastic fibers and smooth muscle
      C) Artery
      D) Vein