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Circulatory System

Circulatory System. Anong klaseng puso mayroon ka?. Functions. Transport nutrients and oxygen to cells Transport waste from cells Contains cells that fight infection Helps stabilize the pH and ionic concentration of the body fluids. Parts of the Circulatory System. Blood Blood vessels

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Circulatory System

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  1. Circulatory System Anong klaseng puso mayroon ka?

  2. Functions • Transport nutrients and oxygen to cells • Transport waste from cells • Contains cells that fight infection • Helps stabilize the pH and ionic concentration of the body fluids

  3. Parts of the Circulatory System • Blood • Blood vessels • Heart

  4. Blood • is not just a red liquid but rather is made up of liquids, solids and small amounts of oxygen and carbon dioxide • carries nutrients, water, oxygen and waste products to and from your body cells

  5. Blood • Contains: • Red blood cells (erythrocytes) - carry oxygen to all cells of the body - contains hemoglobin, which binds or releases oxygen depending of the concentration of the environment 2. White blood cells (leukocytes) - helps body fight diseases

  6. Blood • Contains: 3. Plasma - yellowish liquid in which specialized cells and important substances are suspended 4. Platelets - responsible for formation of blood clots

  7. Mechanisms of Blood Clotting - secrete chemicals called clotting factors that react with fibrinogen ( a protein) - fibrinogen is converted to the insoluble threadlike fibrin - strands of fibrin entwine making a mesh that traps blood cells from escaping

  8. Mechanism of Blood Clotting

  9. Blood Vessels • Arteries - vessels that carry blood away from the heart 2. Veins - vessels that carry blood to the heart 3. Capillaries - most of the exchange of gases, nutrients, and wastes take place here

  10. Major Blood Vessels

  11. Blood Vessels

  12. Heart • The main pump of the circulatory system • Hollow organ with thick walls made of cardiac muscle

  13. Parts of the Heart pericardium aorta septum inferior vena cava superior vena cava atrium ventricle tricuspid valve bicuspid valve pulmonary semilunar valve aortic semilunar valve pulmonary vein pulmonary artery

  14. Blood Pressure

  15. Body Circulations • pulmonary circulation – travel of blood between the lungs and the heart • systemic circulation – travel of blood to all other body cells • coronary circulation – supply of oxygen to the heart by its own coronary arteries

  16. Two Parts of a Heartbeat • diastole - ventricular muscles relax and blood flows into the atria and ventricles • systole – ventricular muscles contract thus pumping blood out of the body

  17. HEARTBEAT

  18. Heart Attack MORE . . .

  19. Two Nodes of the Heart • sinoatrial node (SA node)/ pacemaker - located in the wall of the right atrium - signals the atria to contract - controls the rate of heartbeat 2. atrioventricular node (AV node) - located in the septum between atria - signals ventricles to contract

  20. CLICK HERE

  21. Coronary Artery Disease

  22. Diseases • Arteriosclerosis • a condition where artery walls become less elastic because of cholesterol deposits • may lead to heart attack

  23. Diseases • Heart attack • a sudden death of a part of the heart muscle when it fails to receive its blood supply because of clogging

  24. Diseases • Stroke • damage to a part of the brain when it does not get its supply of oxygen and nutrients

  25. Diseases • Leukemia • a cancer caused by an excessive production of immature white blood cells by the bone marrow

  26. Artificial Heart Transplant

  27. MORE ON DISORDERS • A • B • C • D

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