BIOSC-139 Lecture Notes - Lecture 16: Chordae Tendineae, Mitral Valve, Coronary Sinus

• School: Diablo Valley College
• Department: Biological Science
• Course: BIOSC-139
• Professor: khan

Document Summary

External anatomy of heart posterior side. Coronary sinus all coronary veins leading into it; on backside, it empties into lumen of right atrium. Right atrium separated from the right ventricle right atrioventricular valve [av] Wall in left atrium is a little bit thicker because it doesn"t have to stretch. Wall in right ventricle thickest of both atrium cardiac muscle in it the muscles push blood to the lungs, which are next door. Pushes blood to the rest of the body. Fig 22. 6 valves left av valve mitral valve. Right ventricle pumps blood to the lungs. At the junction of the right ventricle & pulmonary trunk have pulmonary semilunar valve. Beginning of aorta at the end of the left ventricle aortic semilunar valve. Semilunar 3 little cusps that makes them up look like half moons. Each valve is made up of 3 cusps. Right av valve separating right atrium from right ventricle made up of 3 cusps of tissue.