18 



OBSTETRICAL ANATOMY. 



longer, and it is not at all infrequent for the Calf to become fixed in the 

 pelvis, there to remain unless removed by artificial means. 



It is also to be noted that the floor of the pelvic cavity is on a much 



Fig. 11. 



Inlet op the Cow's Pelvis : Narkow Pelvis. 



a b, Supero-inferior, or Sacro-pubic Diameter ; c d, Superior Bis-iliac 

 Diameter ; e f, Inferior Bis-iliac Diameter ; e i, / h, Oblique, Ilio-sacral, 

 or Sacro-iliac Diameters. 



higher level than that of the abdomen ; consequently, the abdominal 

 muscles are not inserted into the margin of the pubis, as in Solipeds, 

 but more posterior and lovrer, and have a strong tendon fixed into the 



Fig. 12. 

 Inlet op the Cow's Pelvis : Wide Pelvis. 

 a b, Supero-inferior, or Sacro-pubic Diameter ; c d, Superior Bis-iliac 

 Diameter ; e /, Inferior Bis-iliac Diameter ; e i, f h, Oblique, Ilio-sacral, 

 or Sacro-iliac Diameters ; J K, Middle Diameter. 



pubic symphysis— the transverse ligament of Goubaux. Therefore it is 

 that a kind of steep step has to be ascended by the Calf before it can 

 enter the pelvic cavity, and this explains why it often remains fixed 

 against this upper level at the inlet. 



