Copy of Heart Dissection Lab Report PDF

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Hea rt Dissection Lab Report Problem: What is the structure of the heart? Hypothesis: If the heart structure works together it would circulate the blood. Summarize Procedures: In activity 4.3.1 we will be dissecting a preserved pig’s heart, students will observe the major chambers, valves, and vessels of the heart and be able to describe the circulation of blood through the heart to the lungs and back and out to the rest of the body. Which in this particular case the pig’s heart is used because it is very similar to the human heart in structure, size & function. First students will go to the bag that the teacher has the hearts and get yourself a pig heart. To add on included a dissecting pan, forceps and a scalpel, as well as several pairs of gloves. Afterwards rinse off the excess preservative with sink water and run water into the larger blood vessels to force any blood clots out of the heart chambers. Then place the heart dry and place it in your dissection tray. Before cutting into the heart, and splitting it in half carefully observe the external heart. Next after examining the pericardium, carefully remove this tissue. That is located below the pericardium which being the muscle of your heart called the called the myocardium. Most of the myocardium is located in the lower two chambers of the heart called ventricle. Place the heart in the dissecting pan so the ventral is toward you. Now we will label where the chambers belong. The left atrium which is located upper chamber to your right. Left ventricle located in lower chamber to your right. Right atrium located in the upper chamber to your left. Lastly the right ventricle located on the lower chamber to your left. While the heart is still on the dissecting tray we will examine the blood vessels. To perusal which examine theory the coronary artery, pulmonary artery, Aorta, Pulmonary veins and inferior &

superior vena cava. Then we will be cutting the pulmonary artery into the wall of the right ventricle , pushing your finger into to examine to find the superior vena cava which entering the lack of valves. Now locate the valve between the right atrium and right ventricle called the tricuspid valve. Then ultimately we examine fully the pig’s heart have same structure as human heart. As we identified/analyzed the various parts we discussed the functions and the purposes of each of the part on what they do in their functions. Lastly after we finished and looking through the functions and parts we cleaned up by the instructions of the teacher by carefully washing the equipment and keeping everything cleaned.

Analysis: On the observations we made on the pig’s heart we concluded that the it has the same structure, size and function as a human heart. The heart was cut in half and the 4 main chambers were shown which are the left and right atriums and left and right ventricles. At the end we were able to locate the coronary artery which this blood vessel supply fresh blood with oxygen and nutrients to the heart muscle. The pulmonary artery carries blood to the lungs and was found covering the right ventricle. Then Aorta being major vessel was near the right atria & just behind the pulmonary arteries that go the lungs. The inferior Superior Vena Cava were examined which these two blood vessels are located on your left of the heart and connect to the right atrium . Deoxygenated blood enters the body through these vessels into the right receiving chamber. Using the fingers to feel down into the right atrium. These vessels do not contain valves to control blood flow. Each simple structure of the heart is contributed to providing blood for the survival of the tissues in the bodies.

Conclusion: In conclusion overall we learned how important the heart is to our body. The heart is a pump muscle. I learned the different chambers and blood vessels that are associated with the

heart. Also the functions of the different structures of the heart. We dissected a pig’s heart to examine theory to see the structures and functions of it. A pig’s heart has four chambers, the left and right ventricle and the left and right atrium. I learned that scalpel can cut the veins if used to harshly....