Mammal Heart Dissection

Mammal Heart Dissection prelab slides

1. MAMMAL HEART DISSECTION

2. Heart Dissection

3. Heart Dissection

4. Identify the base and apex of the heart Locate the auricles and identify the two atria Heart Dissection

5. Identify the two ventricles The right ventricle will have thinner walls The left ventricle will have thicker, more muscular walls Heart Dissection

6. Cut through the wall of the right atrium and remove a portion of the wall Be careful not to cut the right ventricle Observe the tricuspid valve Heart Dissection

7. Use a probe to push through the tricuspid valve into the right ventricle Observe the number of flaps Heart Dissection

8. Make an incision through the right ventricle and remove the front portion of the wall Heart Dissection

9. Locate the aorta Cut through the wall of the aorta until you see the aortic semilunar valve Heart Dissection

10. Locate the pulmonary trunk Cut through the vessel wall until you see the pulmonic semilunar valve Heart Dissection

11. Note the difference in the diameters of the aorta and pulmonary trunk Heart Dissection

12. Cut through the wall of the left atrium to view the bicuspid valve Observe the number of flaps Heart Dissection

13. Make an incision through the left ventricle inferior to the interventricular groove Remove the lower front portion of the wall Heart Dissection

14. Notice the difference in the size of the two ventricles Heart Dissection

15. Observe the interventricular septum that divides the two ventricles Heart Dissection

16. Observe the bicuspid valve and the supporting chordae tendineae and papillary muscles Heart Dissection

17. Heart Dissection

18. Using a probe, trace the pathway of blood from the left ventricle through the semilunar valve to the aorta Heart Dissection

19. Repeat this action for the right ventricle, tracing the pathway from the ventricle through the pulmonic semilunar valve to the pulmonary trunk Heart Dissection