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CIRCULATORY SYSTEM

CIRCULATORY SYSTEM. LABEL THE HEART. NAMES OF LAYERS CHAMBERS VALVES MAJOR BLOOD VESSELS. CARDIOVASCULAR SYSTEM. ALSO KNOW AS CIRCULATORY SYSTEM. CV SYSTEM. HEART BLOOD VESSELS BLOOD. TRANSPORTATION SYSTEM. TRANSPORTS OXYGEN NUTRIENTS TO BODY CELLS CARBON DIOXIDE

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CIRCULATORY SYSTEM

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  1. CIRCULATORY SYSTEM

  2. LABEL THE HEART • NAMES OF LAYERS • CHAMBERS • VALVES • MAJOR BLOOD VESSELS

  3. CARDIOVASCULAR SYSTEM • ALSO KNOW AS CIRCULATORY SYSTEM

  4. CV SYSTEM • HEART • BLOOD VESSELS • BLOOD

  5. TRANSPORTATION SYSTEM • TRANSPORTS • OXYGEN • NUTRIENTS TO BODY CELLS • CARBON DIOXIDE • METABOLIC MATERIALS AWAY FROM BODY CELLS

  6. HEART • MUSCULAR, HOLLOW ORGAN • PUMP OF THE BODY • SIZE OF CLOSED FIST • LOCATED • MEDIASTINAL CAVITY • BETWEEN HEART AND LUNGS • BEHIND STERNUM • ABOVE DIAPHRAGM

  7. THREE LAYERS OF TISSUE • ENDOCARDIUM • MYOCARDIUM • PERICARDIUM

  8. ENDOCARDIUM • SMOOTH LAYER OF CELLS • LINES THE INSIDE OF THE HEART & BLOOD VESSELS • ALLOWS FOR SMOOTH FLOW OF BLOOD

  9. MYOCARDIUM • Thickest layer • muscular middle layer

  10. PERICARDIUM • DOUBLE LAYERED MEMBRANE OR SAC • COVERS THE OUTSIDE OF THE HEART

  11. SEPTUM • MUSCULAR WALL • SEPARATES HEART INTO RIGHT AND LEFT SIDE • PREVENTS BLOOD FROM MOVING BETWEEN THE RIGHT AND LEFT SIDE OF THE HEART • UPPER PART OF SEPTUM CALLED • INTERATRIAL SEPTUM • LOWER PART CALLED • INTERVENTRICULAR SEPTUM

  12. HEART CHAMBERS • FOUR PARTS OR CHAMBERS • TWO UPPER CHAMBERS • ATRIA • TWO LOWER CHAMBERS • VENTRICLES

  13. VALVES • TRICUSPID VALVE • RIGHT ATRIUM & RIGHT VENTRICLE • PULMONARY VALVE • RIGHT VENTRICLE AND PULMONARY ARTERY

  14. MITRAL VALVE • LEFT ATRIUM AND LEFT VENTRICLE • AORTIC VALVE

  15. HEART BEAT CYCLE • RIGHT & LEFT SIDES OF HEART WORK TOGETHER • ELECTRICAL IMPULSE CAUSES MYOCARDIUM TO CONTRACT • PERIOD OF CONTRACTIONOR (SYSTOLE) FOLLOWED BY A BRIEF PERIOD OF REST (DIASTOLE)

  16. RIGHT ARTIUM • RECEIVES BLOOD • AS RETURNS FROM BODY CELLS

  17. RIGHT VENTRICLE • RECEIVES BLOOD • FROM RIGHT ATRIUM • PUSHES BLOOD • INTO PULMONARY ARTERYWHICH CARRIES BLOOD TO LUNGS FOR OXYGEN

  18. LEFT ATRIUM • RECEIVES OXYGENATED BLOOD FROM LUNGS

  19. LEFT VENTRICLE

  20. RECEIVES BLOOD FROM THE LEFT ATRIUM

  21. PUSHES BLOOD INTO THE AORTA

  22. VALVES • ONE WAYVALVES IN CHAMBERS OF HEART KEEP BLOOD FLOWING RIGHT DIRECTION • TRICUSPID • PULMONARY • MITRAL • AORTIC

  23. CONDUCTIVE PATHWAY • Electrical impulses starting in the heart cause contraction of the muscles.

  24. Sinoatrial node (SA) • Group of nerves located in right atrium • Pacemaker • Sends electrical impulse that spreads over muscle of atria • Atrial muscles contract then push blood into ventricels. • After impulse goes through atria reaches the Atrioventricular (AV) node.

  25. Atrioventricular (AV) node • Group of nerve cells • Located between the atria and ventricles • Electrical impulse through septum • Nerve fibers in septum called bundle of HIS

  26. Bundle of HIS • Nerve fibers in septum • Right and left bundle branches

  27. Right and left bundle branches • Carry impulse down through ventricles • Subdivide into a network of nerve fibers in ventricle called purkinje fibers.

  28. Purkinje fibers • Final conduction pathway • Spread to all muscle tissue in the ventricles • Ventricles contract

  29. Conduction • Occurs approximately every 0.8 seconds. • Electrical impulse can be recorded on an EKG • Used to detect abnormal activity or disease.

  30. THE END

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