heart

    Cards (25)

    • How are the sides of the heart labeled in diagrams?
      The right side is labeled as left
    • What are the four chambers of the heart?
      Left atrium, left ventricle, right atrium, right ventricle
    • What is the function of the pulmonary artery?
      It carries blood to the lungs
    • What is the role of the pulmonary vein?
      It returns blood from the lungs
    • What is the largest artery in the body?
      The aorta
    • What is the vena cava's function?
      It returns blood from the body to the heart
    • What are the structures that ensure blood flows in one direction?
      Valves
    • Why are valves important in the heart?
      They ensure blood travels in one direction
    • What is the first loop in double circulation?
      Heart to lungs and back to heart
    • What happens in the lungs during the first loop of circulation?
      Gas exchange occurs
    • What is the second loop in double circulation?
      Heart to body and back to heart
    • What does blood drop off and pick up in the body loop?
      It drops off nutrients and picks up waste
    • How does blood travel from the right ventricle to the lungs?
      It goes through the pulmonary artery
    • How does blood return to the heart from the lungs?
      It comes back via the pulmonary vein
    • What are arterioles?
      Smaller blood vessels branching from arteries
    • What is the structure of capillaries?
      They have very thin walls, one cell thick
    • Why are capillaries narrow?
      To allow red blood cells to travel single-file
    • What is the function of capillaries in the body?
      Maximize exchange of substances
    • What is the structure of veins?
      Thin walls and large lumen
    • What do valves in veins do?
      Prevent backflow of blood
    • How do muscles help veins function?
      They squeeze veins to move blood
    • What are the key features of arteries, veins, and capillaries?
      • Arteries: Thick muscular walls, narrow lumen, elastic tissue
      • Veins: Thin walls, large lumen, valves
      • Capillaries: Very thin walls (one cell thick), narrow, numerous
    • What is the importance of blood circulation?
      • Carries nutrients to cells
      • Removes waste from cells
      • Delivers oxygen for respiration
      • Maintains body function
    • What is double circulation in humans?
      • Two loops: heart to lungs and back, heart to body and back
      • Ensures efficient gas exchange and nutrient delivery
    • What is coronary heart disease?
      • Affects coronary arteries
      • Reduces blood supply to the heart
      • Can lead to heart problems
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