10.22376/ijpbs.2019.10.1.p1-12 Volume 2 Issue 1 2011 (January - March) Respiratory system is the basic prerequisite for living organisms to retain their life . This system has undergone various modifications and in multicellular organisms like man it developed into a system of branching network of bronchial tree. The bronchial tree includes the trachea , right and left principal bronchi and their branching upto alveoli. The study of this bronchial tree is done to know the dimensions of trachea and branching pattern of the bronchial tree by cadaveric dissection. This is useful for thoracic surgeons and others for doing various surgical procedures and during interventions The study was done using the 50 lung specimens obtained from the anatomy department of Osmania Medical College and from unclaimed bodies of Forensic department of Osmania General Hospital. Various dimensions like tracheal length, width, subcarinal angle ,length of right and left principal bronchus and their width are taken. In the present study all the dimensions are with in the normal limits. Out of the 50 lungs 4 specimens showed variations in the branching patterns.  DR.C.MRUDULA,DR. M.KRISHNAIAH Trachea, bronchial tree, subcarinal angle, branching pattern. 106-112