346 



HAND-BOOK OF PHYSIOLOGY. 



SIZES OF VARIOUS HISTOLOGICAL ELEMENTS AND TISSUES. 



Air-cells, ^ to 

 Blood-cells (red), -g-g 



Average size infractions of an inch, 

 Lacunas (bone), 



(breadth). 



-nrioir (thickness). 

 (colorless), Yg Vir- _ 

 Canaliculus of bone, T ^Vo- (width). 

 Capillary blood-vessels, 



to TgW (bone). 

 Cartilage-cells (nuclei of), 

 Chyle-molecules, -g^-onr 

 Cilia, T oW to nW (length). 



Cones of retina (at yellow spot), 



Tdnro-.to Tinhnr (width). 

 Connective-tissue fibrils, g i to 



(width). 



Dentine-tubules, ^faj (width). 

 Enamel-fibres, g 1 00 (width). 

 End-bulbs, ^fa. 

 Epithelium 



columnar (intestine), 



(length). 

 spheroidal (hepatic), r oVo to or- 

 squamous (peritoneum) 



(width). 

 squamous (mouth), 



(skin), 

 Elastic (yel.) fibres, 



(wide). 



Fat-cells, ^ to 

 Germinal vesicle, 



spot, 

 Glands 



gastric, ^ to ^ (length). 



^to,^ (width). 

 Lieberkuhns (small intestines), 



-^ (width). 

 (width).' 

 to 



to jfo- (length). 

 Lieberkuhn's (small intestine), 



to 



(width). 



Peyer's (follicles), 

 Sweat, ^5- (width). 



" in axilla, -^- to -J- (width). 

 Haversian canals, T oVo- to 

 ( width). 



(length). 



Macula lutea, -g 1 



Malpighian bodies (kidney), T $-g 



" corpuscles (spleen), 



.to A* 



Muscle (striated), T -J-g- to 



( width). 

 Muscle-cell (plain), -^ to 



length). 



Muscle-cell (plain), T -gVo- to 



(width). 

 Nerve-corpuscles (brain), -g-jj^rr to 



300* 



Nerve-fibres (medullated) y^-J-o^ to 



y^or (width). 

 Nerve- fibres (non-medullated) 80 J 00 



to 5oVo (width). 

 Ovum, T ^. 

 Pacinian bodies, y 1 ^ to yV (length). 



" A to A- (width). 



Papillaa of skin (palm), -^ to y^-g- 



(length). 



" (face), ^ to T^. 

 tongue (circumvallate), fa- 



to T V (width). 

 " " (fungiform), ^ to fa 



(width). 



m " " ffiliform), T V (length). 

 Pigment-cells of choroid (hexa- 



gonal), y^Vo-. 

 Pigment-granules, ^J^nr. 

 Spermatozoon, -g^ to -^ (length). 

 head, F5 Vo S 



" ToicH) (Width). 



Touch-corpuscle, y^g- (length). 

 Tubuli seminiferi, -^ to y^-g- 



( width). 

 Tubuli uriniferi, -$!-$. 

 ViUi, A to i (length). 



T V (Width). 



