internal anatomy
Dissection Procedures :
1. Insert your dissecting scissors or scalpel into the superior vena cava and make an incision down through the wall of the right atrium and ventricle. Pull the two sides apart and look for three flaps of membrane. These membranes form the tricuspid valve between the right atrium and the right ventricle.
2. The valves are connected to the papillary muscles by tendons called the chordae tendinae or "heart strings" LOCATE THESE STRUTURES.
3. Insert your probe into the pulmonary artery and see it come through to the right ventricle. Make an incision down through this artery and look inside it for three small membranous pockets. These form the pulmonary semilunar valve which prevents blood from flowing back into the right ventricle.
4. Make an incision down through the wall of the left atrium and ventricle. LOCATE THE MITRAL VALVE (OR BICUSPID VALVE) between the chordae tendinae on this side of the heart.
5. Insert a probe into the aorta and observe where it connects to the left ventricle. Make an incision up through the aorta and examine the inside carefully for three small membranous pockets. These form the aortic semilunar valve.
2. The valves are connected to the papillary muscles by tendons called the chordae tendinae or "heart strings" LOCATE THESE STRUTURES.
3. Insert your probe into the pulmonary artery and see it come through to the right ventricle. Make an incision down through this artery and look inside it for three small membranous pockets. These form the pulmonary semilunar valve which prevents blood from flowing back into the right ventricle.
4. Make an incision down through the wall of the left atrium and ventricle. LOCATE THE MITRAL VALVE (OR BICUSPID VALVE) between the chordae tendinae on this side of the heart.
5. Insert a probe into the aorta and observe where it connects to the left ventricle. Make an incision up through the aorta and examine the inside carefully for three small membranous pockets. These form the aortic semilunar valve.