Heart Gross Anatomy Flashcards
under the thoracic wall: you don’t see the heart, it’s in what?
pericardium = sac lining the pericardial cavity
layers of the pericardium
serosal pericardium: have the epicardium aka visceral layer that covers myocardium, then a pericardial cavity, then the parietal layer of the serosal pericardium. right on that is the fibrous pericardium
pericardiocentesis
removal of fluid from pericardial sac –> approach anteriorly or inferiorly
heart location? base vs. apex?
2/3 left, 1/3 right. base top right, apex bottom left
grooves/sulcui on heart
coronary sulci that separate atrium and ventricles. anterior interventricular sulcus = where the septum would be, b/w left and right
great vessels off of the aorta
brachiocephalic trunk (branches into right subclavian and right common carotid). left common carotid. left subclavian.
coronary circulation: right side?
right coronary artery lies in coronary sulcus, goes around the heart, and continues down into posterior interventricular sulcus
coronary circulation: left side?
bifurcation: circumflex branch along coronary sulcus; other one goes down = anterior interventricular branch
right vs. left dominant
right 50% = when right coronary artery continues as posterior interventricular artery. left 20% = circumflex branch of left artery continues into posterior interventricular sulcus instead of right artery
heart veins drain into? then into?
coronary sinus then to right atrium
order of conduction through heart
SA node, atrial depolarization, AV node, AV bundle of his then to left and right bundle branches then to purkinje fibers and ventricles contract
PQRST meaning
P = atria depol (SA node). QRS complex = ventricle depol. T = ventricle repol.
4 heart sound locations?
aortic: right 2. pulmonary: left 2. tricuspid: 4th, L or R. mitral: 5th, mid clavicular line
