Anatomy of right atrium

Heart Anatomy

1. ANATOMY OF RIGHT ATRIUM ; RIGHT VENTRICLE; PULMONARY AND TRICUSPID VALVE BY: DR DHANESH KUMAR BHARDWAJ DNB-CTVS

2. RIGHT ATRIUM RIGHT UPPER CHAMBER OF HEART RECEIVES VENOUS BLOOD FROM WHOLE BODY THROUGH MAIN SIX TRIBUTARIES FORM RIGHT BORDER ; PART OF UPPER BORDER ;STERNOCOSTAL SURFACE AND BASE OF HEART

3. IMAGE OF RIGHT ATRIUM

4. EXTERNAL FEATURES CHAMBER IS ELONGATED VERTICALLY ;RECEIVING SVC AT UPPER END END AND IVC AT THE LOWER END RIGHT AURICLE :UPPER END PROLONGED TO LEFT TO FORM IT. AURICLE COVER THE ROOT OF AA AND PARTLY OVERLAPS THE INFUNDIBULAM OF RV . ITS MARGIN ARE NOTCHED AND INTERIOR IS SPONGE LIKE WHICH PREVENTS THE FREE FLOW OF BLOOD .

5. SULCUS TERMINALIS CRISTA TERMINALIS RIGHT ATRIOVENTRICULAR GROOVE

6. Tributaries of right atrium SVC IVC CORONARY SINUS ANTERIOR CARDIAC VEIN VENAE CORDIS MINIMI (THEBESIAN VEINS) SOMETIME RIGHT MARGINAL VEIN

7. INTERNAL FEATURES SMOOTHPOSTERIOR PART OR SINUS VENARUM ROUGH ANTERIOR OR PECTINATE PART INCLUDING THE AURICLE INTERATRIAL SEPTUM

8. TRICUSPID VALVE COMPONANTS FIBROUS RING CUSPS

9. SURFACE MARKING OF TRICUSPID VALVE ; BEING NEARLY VERTICAL ;4CM LONG ;BEHIND THE RIGHT HALF OF STERNUM OPPOSITE THE 4TH AND 5TH SPACES

10. PULMONARY VALVE SEMILUNAR VALVE NO FIBROUS RING LUNULE PULMONARY SINUS

11. SURFACE MARKING A HORIZONTAL LINE ;2.5CM LONG ;BEHIND THE UPPER BOARDER OF 3 RD LEFT COSTAL CARTILAGE AND ADJOINING PART OF STERNUM

12. RIGHT VENTRICLE TRINGULAR CHAMBER 2 SURFACES INFLOWINGOR TRABECULAE CARNEAE AND OUTFLOWIG PART INFUNDIBULUM SUPRAVENTRICULAR CREST 2 ORIFICES MUSCULAR RIDGES OR T.C ARE THREE TYPES ;RIDGE; BRIDGE; PILLAR CRECNTRIC CAVITY

13. RIGHT VENTRICLE

14. THANKING YOU