1. Notes on the Cardiovascular System
... begins at aorta feeds front of heart Right coronary artery front of aorta feeds back of heart Sinoatrial node SA node, is pacemaker of heart The impulse for contraction starts at SA node spreads over atria then ventricles via AV node. Then left and right bundle branches, bundle of his, then purkinje fibers Vagus nerve slows heart rate ... activity, ect.. by releasing epinephrine and norepinephrine that stimulate hearts pacemaker Systemic circulation distributes oxygenated blood from left ventricle, starting at aorta and continuing through arteries all over body and returns deoxygenated...
- Word Count: 3244
- Approx Pages: 13
- Grade Level: Undergraduate