Vol. 10, Special Issue 4 (2021)

Author(s):
Manoj Kumar Sinha, Avnish Kumar Gautam and Deepak Kumar

Abstract:
The present study revealed that the apical bronchus originated from right side of the trachea at the level of 35th and 39th tracheal rings in sheep and goat respectively. In goat, left principal bronchus gives off five lateral branches, three ventral branches, five dorsal branches and two medial branches (L5, V3, D5, M2). The right bronchus detached five lateral, five ventral, two medial and six dorsal first order branches. In sheep, the right principal bronchus gave rise to five laterals, four dorsal, two medial and four ventral first order branches whereas the left principal branches gave rise to six lateral, five dorsal, two medial and four ventral branches. It was observed that there was no definite pattern of origin of the first order branches from the principal bronchus both in goat and sheep. With the help of rubber cast (Anabond) prepared during this investigation exhibited second order, third order, fourth order and even fifth order branches of the bronchial tree which represented tertiary bronchus, terminal bronchus, bronchiole and terminal bronchiole respectively.