1. 05/10/11 Miss Radford The Heart about the structure of the heart. WAL: All Most Some What is the appearance of the heart and its associated blood vessels? Why is the heart made up of two adjacent pumps? How is the structure of the heart related to its functions?

3. (gulp) But sheep have nice hearts…

4. Supplies you will use:

5. Scalpel Blade

6. Scalpel Handle

7. Surgical Scissors

8. Hemostats

9. Dissection Tray & Pig Heart Don’t forget your gloves!

10. Slide blade on scalpel handle Slide blade on scalpel handle. Peel back blade packet halfway. Slide over narrow tip of scalpel handle.

11. Scalpel is now ready for dissection.

13. Base Apex

14. Auricles Rt.Lt. Ear-shaped extensions of the atria.

15. The auricles wrap around to the anterior side of the heart. Anterior

16. The Coronary Vessels The cardiac muscle receives oxygen for metabolism and releases waste products into coronary vessels.

17. Anterior View

18. The Great Vessels The large veins & arteries, which transport blood to and from the heart muscle.

19. Locating the great vessels:

20. Anterior View--Aortic Arch Aorta Arising from the left ventricle of the heart is the largest artery of the body, the aorta. Rt.Lt.

21. Anterior View--Aortic Arch Brachiocephalic trunk (innominate artery) Rt.Lt. Lt. common carotid

22. Aorta: Posterior ViewAorta Lt. Rt.

23. Posterior View--Vena Cavae Superior Vena Cava Inferior Vena Cava Lt.Rt.

24. Posterior View--Pulmonary Artery Lt. Pulmonary Artery Lt.Rt.

25. Posterior View--Pulmonary Veins Pulmonary veins are inferior to pulmonary arteries. Rt.Lt.

26. Rt. Pulmonary Vein Lt. Pulmonary Vein

28. Dissect heart on the coronal plane.

29. Open heart on dissection tray. Posterior half Anterior half Rt.Lt.

30. Septum Lt. Atrium Rt. Atrium aorta Rt. Lt.

31. Rt. Ventricle Lt. Ventricle Septum aorta Width of right ventricular wall Width of left ventricular wall

32. Chordae tendinae Tricuspid valve Cusp of valve Papillary muscles Septum

33. Mitral valve Septum

34. cusp

35. Chordae tendinae

36. Check point Students should be able to trace pathway of blood through great vessels and heart. Students should be able to trace pathway of blood through great vessels and heart. (begin with vena cava and end with vena cava)