Nerve cor< 

 Notochord 



Dorsal aorta 

 Reimlartei 



Glomerulus 



Pronephric 

 duct 



Boivman's 

 capsule 



Nephrostomy 



\ 



Heart 



/M'esonephros 



Developing 

 metayiephros 



Mesonephric 

 duct 



L.hro \ Mesonephros. At top, diao^rammatic cross section of amphibian 



!" 1 T x"" u ^^'T^"-''^ °^ mesonephros. At bottom, embrvo of man 



^vltll body wall and viscera remo^-ed to show mesonephros', with the 



metanephric outpocketings from the mesonephric ducts 



