{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

BIO2A03-2011-L27 - Biology 2A03 2011 Lecture 27 Respiration...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
Biology 2A03 - 2011 Lecture 27 Respiration V
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
pH 7.6 pH 7.4 pH 7.2 Temp = 39ºC  P50 Unloading point during exercise Unloading point at rest Loading point at rest
Background image of page 2
Loading point at rest Unloading point at rest Unloading point during exercise pH 7.6 pH 7.4 pH 7.2 Temp = 39ºC  Loading point  during exercise During exercise, O unloading can be  increased to 90% (i.e. venous reserve  decreased to 10%) by combined effect of  Pv O2 , P CO2 , pHv, &  temperature.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Organic Phosphate m o le c ule s  are  als o  im po rtant ne g ative   allo s te ric  m o difie rs  o f O 2  binding , but play little  ro le  during   e xe rc is e Mam m als   - 2,3-dipho s pho g lyc e rate  (2,3-DPG ) Birds  -  IP 5  (ino s ito l pe ntapho s phate ) Fis h & am phibians  -  ATP & G TP Inc re as e  in RBC  [ pho s phate ] s hifts  c urve  to   rig ht  in m o s t  m am m als  during   anae m ia, hig h altitude , re s pirato ry dis e as e s .   This  he lps  im pro ve  O 2   unlo ading  to  the  s ys te m ic  tis s ue s Ho we ve r s o m e  m am m alian s pe c ie s  whic h are  native  to  hig h 
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}