The circulatory system


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Learn about the circulatory system, organs and disease

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The circulatory system

  1. 1. Learn about The Circulatory System By Brittany Manning Paeroa College, NZ
  2. 2. Contents <ul><li>Slide 3 The Circulatory System Diagram 4 The purpose of the Circulatory System 5-9 Interesting Facts: How much do you know? 10 Circulatory System Organ: The Heart (diagram) 11 The Purpose of the Heart How does the Heart work 12 Circulatory System Organ: The Aorta (diagram) 13 The Purpose of the Aorta How does the Aorta work 14 Leukaemia: What is it? 15 Leukaemia: Symptoms and Treatment 16 Leukaemia: Prevention </li></ul>
  3. 3. The Circulatory System
  4. 4. <ul><li>We need a Circulatory System so that our organs always have blood and oxygen. </li></ul>The Circulatory System The circulatory system is the system responsible for transporting blood throughout the human body.
  5. 5. <ul><li>1. How many blood cells are destroyed in the human body in one second? </li></ul><ul><li>150,000 </li></ul><ul><li>15,000,000 </li></ul><ul><li>150,000,000 </li></ul>How much do you know? <ul><li>4. A man’s heartbeat is faster than a women’s. True or False? </li></ul><ul><li>True </li></ul><ul><li>False </li></ul>
  6. 6. <ul><li>3. The adult's heart pumps about 15,140 litres of blood in what amount of time? </li></ul><ul><li>One day </li></ul><ul><li>One hour </li></ul><ul><li>One week </li></ul>How much do you know? <ul><li>4. How long (on average) does it take for blood to circulate around the WHOLE body? </li></ul><ul><li>23 seconds </li></ul><ul><li>23 minutes </li></ul><ul><li>23 hours </li></ul>
  7. 7. <ul><li>5. One drop of blood contains 5 million Red Blood Cells. True or False? </li></ul><ul><li>a) True </li></ul><ul><li>b) False </li></ul>How much do you know? 6. The human heart continues to beat even after it is taken out of the body or cut in to pieces. True or False? a) False b) True
  8. 8. <ul><li>7. Human blood on its own is in colour. </li></ul>How much do you know? 8. The average adult body contains of blood and an has about 1 litre. 5-6 litres infant clear Haemoglobin, a pigment in the red blood cells, is responsible for the red colouring of the blood.
  9. 9. <ul><li>9. The human heart beats times in a year. </li></ul>How much do you know? 10. The Pulmonary vein carries blood. 30 million oxygenated
  10. 10. The Heart
  11. 11. The Purpose of the Heart The human heart has four chambers. The two upper chambers are known as the atria, and the two lower chambers are known as the ventricles. The atria contract at the same time. When atria contract, blood is forced into the heart’s lower chambers which are the ventricles. Both ventricles receive blood from their respective atria. For example the left ventricle receives blood only from the left atrium and vice versa. The ventricles then contract simultaneously to pump blood out of the heart. The human heart &quot;beats&quot; (or expands and contracts) to pump blood which carries oxygen and important nutrients to all areas of the body and waste away from the body. How does the Heart work
  12. 12. The Aorta
  13. 13. The Purpose of the Aorta It receives the blood from the heart and routes it to all the parts of the body. It is the main artery in the human body. How does the Aorta work The aorta is the main (and largest) artery of the circulatory system. It carries the blood out of the heart from the left ventricle. The heart pushes the blood through the aorta.
  14. 14. Leukaemia Leukaemia is cancer that starts in the tissue that forms blood. What is Leukaemia?
  15. 15. Leukaemia <ul><li>Some symptoms of leukaemia are: </li></ul><ul><li>Swollen lymph nodes that usually don't hurt (especially lymph nodes in the neck or armpit) </li></ul><ul><li>Fevers or night sweats </li></ul><ul><li>Frequent infections </li></ul><ul><li>Feeling weak or tired </li></ul><ul><li>Bleeding and bruising easily (bleeding gums, purplish patches in the skin, or tiny red spots under the skin) </li></ul><ul><li>Swelling or discomfort in the abdomen (from a swollen spleen or liver) </li></ul><ul><li>Weight loss for no known reason </li></ul><ul><li>Pain in the bones or joints </li></ul>Symptoms Treatment <ul><li>There are many treatment options for leukaemia. They are: </li></ul><ul><li>Watchful Waiting </li></ul><ul><li>Chemotherapy </li></ul><ul><li>Targeted Therapy </li></ul><ul><li>Biological Therapy </li></ul><ul><li>Radiation Therapy </li></ul><ul><li>Stem Cell Transplant </li></ul>If your spleen is enlarged, you may have surgery to remove it. Sometimes a combination of the treatments is used.
  16. 16. Leukaemia Prevention Most cases of leukaemia can’t be prevented. We have yet to identify real, known causes and risk factors for leukaemia , so preventing leukaemia is not possible yet. However, researchers have identified a few risk factors for certain types of leukaemia: <ul><li>Cigarette smoking. </li></ul><ul><li>Exposure to benzene. </li></ul><ul><li>Previous chemotherapy or radiation treatment. </li></ul>
  17. 17. The End