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The Cardiovascular System

The Cardiovascular System. Part II The Heart and Arteries. Heart. A hollow muscular organ Located in thorax between 2 lungs 4 chambers 2 atria (atrium) & 2 ventricles 2 separate pumps (R & L sides) Right side receives blood from the body and sends it to the lungs ( pulmonary )

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The Cardiovascular System

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  1. The Cardiovascular System Part II The Heart and Arteries

  2. Heart • A hollow muscular organ • Located in thorax between 2 lungs • 4 chambers • 2 atria (atrium) & 2 ventricles • 2 separate pumps (R & L sides) • Right side receives blood from the body and sends it to the lungs (pulmonary) • Left side receives blood from lungs and sends it to the body (systemic)

  3. 2 Pumps

  4. Position of heart

  5. Pericardium • A sac that covers and surrounds the heart Pericardial cavity Cardiac Tamponade

  6. Structure of the Heart

  7. Structure of the Heart LA RA RV LV apex

  8. Apex of Heart • Part of left ventricle • Left intercostal space (ICS) 5 • Space between left ribs 5 & 6 • App. 1 inch inferior to male nipple • Location where heart is most superficial and most easily heard

  9. Apex of Heart

  10. Structure of the Heart

  11. Structure of Blood Vessels • Arteries and veins have 3 wall layers • 1. tunica externa • tunica media • tunica intima

  12. Structure of Blood Vessels

  13. Overview

  14. Aortic Angiogram

  15. Arteries of Head and Neck

  16. Circle of Willis

  17. Arterial Supply of Brain

  18. Upper Extremity Arteries • Subclavian – ends at lateral border of 1st rib • Axillary – in the axillary region • Brachial – surgical neck of humerus to antecubital fossa (elbow) • Radial and ulnar

  19. Upper Extremity Arteries

  20. Flow Diagram (p. 575)

  21. Branches of Descending Aorta

  22. Intercostals 12 pairs Supply Muscles Of ICSs

  23. Paired Arteries of Abdomen Gonadal a. Supply Gonads --testicular a. --ovarian a. Renal a. Supply kidneys

  24. Unpaired Arteries of Abdomen

  25. Unpaired Arteries of Abdomen • Supply the digestive organs • Three of them • Celiac trunk • Superior mesenteric • Inferior mesenteric

  26. Distribution • Stomach • Duodenum • Small intestines • Ascending colon • Transverse colon • Descending colon • Rectum

  27. Digestive System

  28. Distribution • Stomach celiac trunk • Duodenum • Small intestines • Ascending colon • Transverse colon • Descending colon • Rectum

  29. Distribution • Stomach celiac trunk • Duodenum • Small intestines • Ascending colon superior mesenteric • Transverse colon • Descending colon • Rectum

  30. Distribution • Stomach celiac trunk • Duodenum • Small intestines • Ascending colon superior mesenteric • Transverse colon • Descending colon inferior mesenteric • Rectum

  31. Arteries of the Pelvis& Lower Extremity Aorta Bifurcates At L4

  32. Aorta Bifurcates at L4 • Bifurcates into L&R common iliac a.

  33. Aorta Bifurcates at L4 • Common iliacs bifurcate into internal and external iliac a.

  34. Aorta Bifurcates at L4 • Common iliacs bifurcate into internal and external iliac a.

  35. Aorta Bifurcates at L4 • External iliacs become femoral a. distal to pubic bone Pubic bone Femoral a. is major artery in thigh

  36. Overview

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