Exercise 21 Heart AnatomyFor your heart anatomy Lab, you need to be able to identify all of the following structures, mechanisms, and definitions:StructuresPosition of the heart (mediastinum)AortaAscending aortaAortic archDescending aortaIn the order they leave the aorta:1. Brachiocephalic artery2. Left common carotid artery3. Left subclavian arteryInferior vena cavaSuperior vena cavaPulmonic trunkRight and left pulmonary arteriesRight and left pulmonary veinsRight and left atriaRight and left ventriclesRight and left auricleRight coronary arteryRight marginal arteryLeft coronary arteryAnterior interventricular arteryCircumflexPosterior interventricular artery (or posterior descending artery)Coronary sulcusGreat cardiac veinPosterior vein of left ventricleMiddle cardiac veinAtrioventricular valves (tricuspid and bicuspid/mitral)Chordae tendineaeExercise 21 Heart AnatomyPapillary musclesPectinate muscles (atria)Trabeculae carneae (ventricles)Semi-lunar valvesBetween right ventricle and pulmonic trunkBetween left ventricle and aortaPericardiumMyocardiumEndocardiumShunt-like mechanisms in-utero1. Foramen ovale (in-utero)2. Fossa ovalis (~48 hrs after birth)3. Ductus artiosus (in-utero)4. Ligamentum arteriosum (~48 hrs after birth)DefinitionsArtery – a vessel that carries blood away from the heartVeins – a vessel that returns blood to the
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