Heart Dissection Lab

1. The pericardium is a lubricated sac that surrounds the heart. The purpose of the pericardium is to protect the heart.
2. In their structure, arteries are thicker than veins and ridged inside.
3. The auricles are basically an extension of the atrium and allow the heart to pump more blood. They provide an extra space and fills up like a balloon with blood.
4. Between atria and ventricles, the ventricles appear to be darker in color on the outside. While the atria appears to have more surrounding fat and have the attached auricle that appear a brown color.
5. The exit of the coronary sinus is seen on the posterior side of the heart, but was unfortunately blocked my fat. The inferior vena cava would be inferior and posterior to the apex of the heart but was already cut off.
6.

 In this photo you can see the chordae tendinae, which look like long, white fibers and the papillary muscle which is inferior and appears like a lump of muscle. 

7. The heart valves being anchored by the chordae tendinae and papillary muscles is important because it prevents the valves from caving and keeps the blood from back flow. 

8.

When looking at the bicuspid valve, you can see the long white chordae tendinae as well as the papillary muscle which is inferior from the chordae tendinae. 

9. The function of the semilunar valve is to prevent the back flow of blood. 

10. a) Valve disease on the right side of the heart may result in the the swelling of the feet and ankles because the blood is being pushed out of the heart and you might be experiencing blood pooling in other parts of the body, which explain the swelling. 

b) If you experience a valve disease on the left side of the heart you would expect to see a lack of oxygen in your blood, making things such as exercise more difficult. 

11. The chordae tendindeae of the bicuspid valve resemble long, white fibers. They are attached to the posterior surface of the valve. On one side the chordae tendinae are attached to the bicuspid valve, and on the other, they are attached to the papillary muscle. 

12. The left side of the heart receives the oxygenated blood from the pulmonary veins and then helps to pump throughout the body. The right side of the heart receives the deoxygenated blood from the body and then returns the blood to the lungs through the pulmonary artery. 

13.

Interior cross-section of the heart.