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Heart, Valves AV Valves w/ A/P cusps A/P pap. mm. chordae tendinae Mitral/Bicuspid L. at. to L. vent Ascultate at ICS 5, Gross structures ???? Ride a bullet mediastinal par.pleura fibrous pericardium parietal serous peric. serous fluid visc. ser. peric. (epicardium) myocardium endocardium result would be hemopericardium blood in sac, pressure on heart death w/out pericardiocentesis thru left ICS 5/6 or infrasternal angle, Heart Structure 2 Atria, Gross structures ???? Ant. surface-mostly r. vent Crux- post. IV groove/AV sulcus corner 'base'-post. surface, 'apex'-lowest part 8 great vessels Aorta, Pulm a., IVC, SVC, 4 pulm vv, Ride a bullet mediastinal par.pleura fibrous pericardium parietal serous peric. serous fluid visc. ser. peric. (epicardium) myocardium endocardium result would be hemopericardium blood in sac, pressure on heart death w/out pericardiocentesis thru left ICS 5/6 or infrasternal angle ???? Pericardium Neurovasc'ature Phrenic n. (sensory) ant to lung root Vagus n. post. to lung root Internal thoracic a. brr. esp. pericar'ophrenic less from musc'phrenic, 2 main arteries off aorta Left Coronary Artery (4) Right Coronary Artery (2) ???? 'Rt. dominant'= Post. IV a. from RCA, Valves AV Valves w/ A/P cusps A/P pap. mm. chordae tendinae Tricuspid R. at. to r. vent also w/ septal cusp/pap moderator band b/w septum to ant pap m Ascultate at ICS 5, Heart Conduction SA Node-'pacemaker' maintain rhythm for hrs ANS- sym-norepi up h.r. (α-receptors constrict cor. aa. β-receptors dilate) parasym-ACh down h.r. via vagus transplanted hearts w/ no ANS, Heart Conduction CCs pacemaker-fires for slow/absent AP into left brachio-cephalic v, SVC, R. atrium, R. vent. wall, Heart Conduction 1. SA node-ant. base of SVC 2. internodal atrial pathway 3. AV node-in AV part of memb. septum 4. AV bundle of His-post. inf. IA septu 5. L/R bundle brr. 6. Moderator band (r. side only) 7. Purkinje fibers