Blood Vessels

Cards (24)

  • What is the process called when a cell bursts due to osmosis?
    Cell lysis
  • What are the three types of blood vessels and their functions?
    • Arteries: Carry blood away from the heart
    • Veins: Carry blood back to the heart
    • Capillaries: Allow exchange between blood and body cells
  • What is the direction of blood flow in arteries?
    Away from the heart
  • Why do arteries have thick walls?
    To withstand high blood pressure
  • What type of blood pressure do arteries have?
    High
  • Do arteries have valves?
    No
  • What is the lumen diameter of arteries compared to veins?
    Relatively small
  • What is the direction of blood flow in veins?
    Back to the heart
  • Why are veins thinner than arteries?
    They have less muscle and fewer elastic fibres
  • What type of blood pressure do veins have?
    Low
  • Do veins have valves?
    Yes
  • What is the lumen diameter of veins compared to arteries?
    Relatively large
  • What is the direction of blood flow in capillaries?
    From arteries to veins
  • Why are capillaries one cell thick?
    To allow exchange between blood and cells
  • What type of blood pressure do capillaries have?
    Low
  • What is the lumen diameter of capillaries?
    Very small
  • What are the exceptions to the usual blood flow in the pulmonary artery and vein?
    • Pulmonary artery: Carries deoxygenated blood
    • Pulmonary vein: Carries oxygenated blood
  • What does the renal artery carry more of compared to the renal vein?
    More waste products
  • Why does the hepatic portal vein have more oxygen than the hepatic vein?
    Due to respiration by liver cells
  • What happens to glucose in the liver?
    Converted to glycogen for storage
  • What does the renal vein have less of compared to the renal artery?
    Less oxygen
  • What is the role of the kidney in blood composition?
    Excretory and osmoregulatory roles
  • How does the composition of blood change from the hepatic portal vein to the hepatic vein?
    Fewer dissolved food molecules in hepatic vein
  • How does the composition of blood change from the renal artery to the renal vein?
    More waste products in renal artery