Sulcuses of the heart Anterior interventricular groove Posterior interventricular groove o Mark the division between ventricles(which separates the RV from the Ly a Cardiac apical incisure o Atrioventricular crux
Sulcuses of the heart ◼ Anterior interventricular groove ◼ Posterior interventricular groove ❑ Mark the division between ventricles (which separates the RV from the LV) ❑ Cardiac apical incisure ❑ Atrioventricular crux
Chambers of the heart
Chambers of the heart
Chambers of the heart Consists of four chambers Left and right atria o Left and right auricle Left and right ventricles 'o
Chambers of the heart Consists of four chambers ◼ Left and right atria ❑ Left and right auricle ◼ Left and right ventricles
Right atrium(RA) Three inlets o Orifice of superior vena cava returns blood to the heart from the upper half of the body Orifice of inferior vena cava returns blood to the heart from the lower half of the body a Orifice of coronary sinus returns blood to the heart from the cardiac muscle One outlet right atrioventricular orifice
Right atrium (RA) ◼ Three inlets ❑ Orifice of superior vena cava returns blood to the heart from the upper half of the body ❑ Orifice of inferior vena cava returns blood to the heart from the lower half of the body ❑ Orifice of coronary sinus returns blood to the heart from the cardiac muscle ◼ One outlet －right atrioventricular orifice
Right atrium(RA) Crista terminalis -vertical ridge that from superior vena cave to inferior vena cave Sulcus terminalis-groove on exterior of heart that corresponds to crista terminalis Two parts-separated externally by sulcus terminalis and internally by the crista terminalis a Atrium proper a Sinus venarum cavarum
Right atrium (RA) ◼ Crista terminalis －vertical ridge that from superior vena cave to inferior vena cave ◼ Sulcus terminalis－groove on exterior of heart that corresponds to crista terminalis ◼ Two parts －separated externally by sulcus terminalis and internally by the crista terminalis ❑ Atrium proper ❑ Sinus venarum cavarum