RT Book, Section
A1 Kim, Brian A.
A1 Yang, Seol W.
A2 Freeman, Brian S.
A2 Berger, Jeffrey S.
SR Print(0)
ID 1135739490
T1 Bronchial Anatomy
T2 Anesthesiology Core Review: Part Two Advanced Exam
YR 2016
FD 2016
PB McGraw-Hill Education
PP New York, NY
SN 9781259641770
LK accessanesthesiology.mhmedical.com/content.aspx?aid=1135739490
RD 2024/04/20
AB In  the  respiratory  system,  the  bronchus  connects  the  trachea  to  lung  parenchyma  for  gas  exchange  with  the  atmosphere.  The  trachea  bifurcates  into  right  and  left  mainstem  bronchi  at  the  carina  (T5  vertebrae  level).  The  right  mainstem  bronchus  measures  2.5  cm  in  length  and  is  shorter,  wider,  and  more  vertical  than  the  left  counterpart.  On  bronchoscopy,  the  right  mainstem  appears  as  a  more  direct  continuation  of  the  trachea,  thus  making  the  right  lung  more  susceptible  to  aspiration,  foreign  body  entrapment,  and  endotracheal  tube  misplacement.  In  contrast,  the  left  mainstem  bronchus  typically  measures  5  cm  in  length  and  is  more  angulated  and  narrower  in  caliber.  Mainstem  bronchi  divide  into  lobar  bronchi  and  more  distally  into  segmental  bronchi.  There  are  typically  10  bronchopulmonary  segments  in  each  lung.  Lobar  and  segmental  branches  can  be  organized  according  to  Table  41-1  and  Figure  41-1.