Reference no: EM132383859

Sheep Heart Dissection

First watch the attached two 4-minute videos and read through the "walk- through" dissection document. Read through this lab and answer the 29 questions on the last two pages.

Compare the heart of the sheep to the human heart by viewing the heart model :

Label the Heart

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14. What muscles hold the valves in place?

15. What are the flaps on the front of the atria called?

16. The large vessel on the front of the heart that lies in front of the aorta is the

17. What are the tendons that connect the valves to the muscles?

18. How can you tell which side of the heart is the ventral surface?

19. What is the purpose of the coronary artery and what results if there is a blockage in this vessel?

These are the 4 major blood vessels connected to the heart. Indicate which vessels connect to which chambers:

20. Pulmonary Artery to the

21. Pulmonary Vein to the

22. Aorta to the

23. Superior/Inferior Vena Cava to the

24. What is the purpose of heart valves?

25. How do the walls of the atria compare with the walls of the ventricles and why are they different?

26. If the right ventricle was filled with fluid, describe what would happen to the tricuspid valve when the right ventricle was squeezed. Why does this happen?

27. If you look closely at the aorta, which leads away from the left ventricle and the pulmonary trunk which leads away from the right ventricle and were able to feel them, you would notice that the wall of the aorta is significantly thicker than that of the pulmonary trunk.

What accounts for this difference?

28. Can an artery carry deoxygenated blood? Explain.

29. Using words, trace blood flow through the major blood vessels, heart, and lungs starting AND ending with deoxygenated blood returning from the body.

Attachment:- Sheep Heart Dissection.rar