RT Book, Section
A1 Barrett, Kim E.
A1 Barman, Susan M.
A1 Boitano, Scott
A1 Reckelhoff, Jane F.
SR Print(0)
ID 1142557300
T1 Respiratory Physiology: Introduction
T2 Ganong's Medical Physiology Examination & Board Review
YR 2017
FD 2017
PB McGraw-Hill Education
PP New York, NY
SN 9780071832328
LK accessmedicine.mhmedical.com/content.aspx?aid=1142557300
RD 2024/04/19
AB The  uptake  of  O2  and  removal  of  CO2  from  the  body  is  the  primary  goal  of  the  lung.  At  rest,  a  normal  human  breathes  12–15  times  a  minute.  With  each  breath  containing  ~500  mL  of  air,  this  translates  to  6–8  L  of  air  that  is  inspired  and  expired  every  minute.  On  average,  250  mL  of  O2  enters  the  body  per  minute  and  200  mL  of  CO2  is  excreted.  In  addition  to  the  O2  that  enters  the  respiratory  system,  inspired  air  also  contains  a  variety  of  particulates  that  must  be  properly  filtered  and/or  removed  to  maintain  lung  health.  Although  humans  have  a  certain  amount  of  control  over  breathing,  most  functions,  including  the  fine  adjustments  necessary  for  proper  lung  function,  are  accomplished  independent  of  voluntary  control.  The  goal  of  this  section  is  to  review  basic  concepts  that  underlie  important  aspects  of  the  control  and  outcome  of  breathing  and  introduce  other  important  functions  of  the  lung.