The circulatory system

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  • 1. The Circulatory System
  • 2. Transportation system by which oxygen and nutrients reach the body's cells, and waste materials are carried away.
  • 3. Also carries substances called hormones, which control body processes, and antibodies to fight invading germs.
  • 4. www.biosbcc.net/doohan / sample/ htm/heart.htm
  • 5. Parts of the Circulatory System
    • Divided into three major parts:
      • The Heart
      • The Blood
      • The Blood Vessels
  • 6. The heart, the lungs, and the blood vessels work together to form the circle part of the circulatory system.
  • 7. Circulation
    • Two parts
    • Heart acts as double pump
    • Blood from the right side pump is dark red and low in oxygen (oxygen-poor)
  • 8. Circulation
    • Travels through pulmonary arteries to lungs where it gets fresh oxygen and becomes bright red
    • Blood from lungs through pulmonary veins back to the heart's left side pump
    • Pumped out into the body
  • 9. http://users.tpg.com.au/users/amcgann/body/circulatory.html
  • 10. 3 Kinds of Circulation:
    • Pulmonary circulation
    • Coronary circulation
    • Systemic circulation
  • 11. Pulmonary Circulation
    • Movement of blood from the heart, to the lungs, and back to the heart again
  • 12. sln.fi.edu/biosci/systems / pulmonary.html
  • 13. Coronary Circulation
    • Movement of blood through the tissues of the heart
  • 14. http://sln.fi.edu/biosci2/systems/
  • 15. Systemic Circulation
    • Supplies nourishment to all of the tissue located throughout the body , except for the heart and lungs
  • 16. http://sln.fi.edu/biosci/systems/systemic.html
  • 17. Blood Vessels
    • Hollow tubes that circulate your blood
  • 18. Three Kinds of Blood Vessels
    • Arteries
    • Veins
    • Capillaries
  • 19. Arteries
    • Carry blood AWAY from the heart
    • Heart pumps blood
    • Main artery called the aorta
    • Aorta divides and branches
    • Many smaller arteries
    • Each region of your body has system of arteries supplying it with fresh, oxygen-rich blood.
  • 20. Arteries
    • Tough on the outside
    • Smooth on the inside
    • Muscular wall helps the heart pump blood
  • 21. http://hes.ucf.k12.pa.us/gclaypo/circdia.html Have strong, muscular walls The inner layer is very smooth so that the blood can flow easily
  • 22. http://sln.fi.edu/biosci/systems/circulation.html
  • 23. Capillaries
    • Very thin
    • Only one cell thick
    • Connect arteries & veins
  • 24. Capillaries
    • Food and oxygen released to the body cells
    • Carbon dioxide and other waste products returned to the bloodstream
  • 25. http://sln.fi.edu/biosci/systems/circulation.html
  • 26. w3.uokhsc.edu
  • 27.  
  • 28. http://hes.ucf.k12.pa.us/gclaypo/circdia.html Valves are located inside the veins. The valves only allow blood to move in one direction.
  • 29. http://users.tpg.com.au/users/amcgann/body/circulatory.html
  • 30. Veins
    • Carry blood to the heart
    • Receive blood from the capillaries
    • Transport waste-rich/ oxygen-poor blood back to the lungs and heart
    • Valves are located inside the veins
    • Allow blood to move in one direction
  • 31. http://sln.fi.edu/biosci/systems/circulation.html
  • 32. The Heart
    • Size of your fist
    • Thick muscular walls
    • Divided into two pumps
    • Each pump has two chambers
    • Upper chamber - atrium receives blood coming in from the veins
    • Lower chamber - ventricle squeezes blood out into the arteries
  • 33. http://hes.ucf.k12.pa.us/gclaypo/circdia.html
  • 34. Close up of heart valve Heart sounds are made by the valves as they open and close http://hes.ucf.k12.pa.us/gclaypo/circdia.html
  • 35. Blood
    • Pumped by your heart.
    • Travels through thousands of miles of blood vessels
    • Carries nutrients, water, oxygen and waste products to and from your body cells.
    • Made up of liquids, solids and small amounts of oxygen and carbon dioxide.
  • 36. Blood
    • Red blood cells carry oxygen from the lungs to all the cells of the body.
    • Takes carbon dioxide and transports it back to the lungs
    • About 5,000,000 Red Blood Cells in ONE drop of blood.
  • 37. http://hes.ucf.k12.pa.us/gclaypo/circdia.html
  • 38. Blood
    • White blood cells protect the body from germs
    • Attack and destroy germs when they enter the body
  • 39. scienceu.fsu.edu www.merck.com/pubs/mmanual_home / illus/167i2.htm
  • 40. Blood
    • Platelets are blood cells that help stop bleeding
  • 41. user.gru.net/clawrence / vccl/chpt7/plate.htm
  • 42. Blood
    • Plasma is the liquid part of the blood
    • About half of your blood is made of plasma
    • The plasma carries the blood cells throughout the body
    • Plasma is made in the liver.
  • 43. http://hes.ucf.k12.pa.us/gclaypo/circdia.html