' II ATI ER XI 



BLO< >D THE BLOOD CELL 



Bl h\ <.. P] \i;- : . T. A . MH 



THE RED BLOOD CORPUSCLES. OR ERYTHROCYTES 



The most prominenl function of the bl 

 tissues It owes this property chiefly to the red bio 



-•nt in large aumbei - 5, ,000 pei c d m 



are biconcave discs, having a diameter of aboul 7 7. l 

 structed out of a framework composed largely of lipoidal mal 

 the meshes of which i^ deposited a substance call* 



which the remarkable oxygen-carrying power <>t' the bl 1 



ther tin- manner by which the red •■•■ll carries its henn _ 



intimate structure of the cell itself is accurately known. I 



monly believed that the hemoglobin is held enmeshed in 



(ii- stroma, or encased in the cell membrane. One thing 



ever, thai the union of hemoglobin with il '. i* 



a fairly Btrong one, since mere fragmentation 



liberate tin- hemoglobin. The fad that the framework • 



amount of lipoidal Bubstances enables tl 



shape ami is responsible for their chara 



Hemoglobin is a very «•< >ni ]>l<x substance be 

 conjugated proteins Bj chemical means it c 

 Bimple «_ r li»liulin ami .i pigment hematin \\ 



pletely saturated, oxygen is pi I in hemog in th< 



of two atoms of oxygen i « » one atom of iron Pet< 

 oxygen can In- carried by hemoglobin containi 

 molecular weight of the molecule being ab< 

 thereof Barcrofl and I' V 1 i 



iron in the molecule w ould rep 

 of th<- molecule. The corpusculai 

 t200 squai i m< tera Tl ■ 



able for the absorpti 



ihm'Ics pass in single file througl I 



Since tin- amounl of ■ ■ aren which ihe bl< 

 it s hemoglobin content, it is 



