HLSC 1F90 Lecture Notes - Lecture 21: Right Coronary Artery, Circumflex Branch Of Left Coronary Artery, Coronary Circulation
16 Apr 2017
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17. 5 million deaths due to cvd in 2012 (31% of all deaths: 7. 4 million were due to coronary heart disease. Projected that 23. 3 million people will die annually in 2030 from cvd. Top of the heart upper right chest, below second rib and right of sternum. Atria: top of the heart, thin walls. Right atrium: separated by interatrial septum, receives deoxygenated blood from, inferior vena cava, superior vena venous system. Left atrium cave, coronary sinus: tricuspid valve, receives oxygenated blood from, 2 mm thick (thicker than right atrium, bicuspid (mitral) valve, brings blood to lungs for oxygen pulmonary veins. Lower chambers larger than the atria: pump blood away from the heart via arteries, separated by interventricular septum. Right ventricle: triangular in shape, superior aspect forms a cone- shaped outflow tract leading to pulmonary artery. Left ventricle: high pressure chamber pumps blood to entire body, longer and thicker than right (3 times thicker)
