Circulatory System

Cards (29)

  • Red Blood Cells
    Erythrocytes
  • Platelets
    Thrombocytes
  • White Blood Cells

    Leukocytes
  • All 3 Blood Vessels
    1. Arteries
    2. Veins
    3. Capillaries
  • What is blood made up of?
    Plasma
    RBC&WBC
    Nutrients
    Waste Products
    Oxygen
  • What are arteries?

    Bring oxygen rich blood from heart to all body cells, thick walls, highly elastic and high pressure to pump round the body
  • Circulatory System is also known as:
    Cardiovascular System
  • Function of Circulatory System
    Allows the blood to circulate and transport nutrients, oxygen, carbon dioxide, hormones and blood cells around the body.
  • Pulmonary Circuit 

    Carries blood to lungs to be oxygenated, goes back to heart where oxygen is taken by red blood cells
  • Systemic Circuit
    Carries oxygenated blood around body to deliver it, the returns to heart. This circuit also carries nutrients and waste
  • Pulmonary artery

    transfers deoxygenated blood away from heart to lungs
  • Pulmonary Vein
    transfers oxygenated blood from lungs to heart
  • lymphocytes
    release antibodies and activate t-cells to kill infected cells and stimulate immune response
  • Erythrocytes
    No nucleus to enable to carry oxygen which attaches to haemaglobin ( protein) transported to target organs/ tissues
  • plasma
    carries substances like nutrients, sugar, salts and transports blood cells to target organs/ tissues
  • Right Atrium
    First chamber to receive deoxygenated blood returning from body
  • Tricuspid Valve
    Prevent back flow of blood from right atrium into right ventricle
  • Right Ventricle
    Deoxygenated Blood flows into right atrium and passes through tricuspid valve and into right ventricle which pumps blood up through pulmonary valve and through pulmonary valve and through pulmonary artery to the lungs
  • Bicuspid Valve
    Permits blood to flow one way only, from left atrium into left ventricle
  • Aorta Distributes oxygen rich blood to all parts of body
  • Pulmonary Vein
    Responsible for carrying oxygenated from lungs back to left atrium of heart
  • Left Atrium
    Holding chamber for blood returning to the lungs and act as a pump to transport blood to other areas of heart
  • Left Ventricle
    Thickest part of heart chambers
    Responsible for pumping oxygenated blood to tissues all over body
  • Capillaries
    Allow exchange of material la between blood and body cells via tissue fluid
    Capillaries have thin endothelium cells of one cell thick
    Decreases distance materials have to travel to be exchanged.
    1 blood cell thick
    Capillaries become venules
  • Erythrocytes function

    Has no nucleus which enables the cell to carry oxygen
    Attached to haemoglobin to target organs/tissues
  • Leukocytes function 

    Fights diseases/ infection to support the immune system
    Ingests/ destroys pathogens
  • Platelets/ Thrombocytes
    clumps together to form a blood clot
    Act in association with thrombin and oxygen
  • Plasma function 

    Carries substances nutrients/ sugars/ salts
    Transports blood cells to target organs / tissues
  • Veins
    Carry deoxygenated blood towards the heart
    Have valves to prevent backflow - structure not really functional