. Journal of anatomy . Fig. 25«.. Fig. 26.—SeaL Fig. 26<t. 54 Mr G. Seccoinbe Hett and Mr H. G. Buttertield The early ftetal condition is represented by the tonsil of the leopard. That the three tonsillar masses of the f ostus are seen in certain mammals, bear and ox. The pars triangularis has its representative among the animals in theprojecting portion of the tonsil of the cats and Ijiixes. The plica semilunaris and plica triangularis represent the reflexion ofmucous membrane at the edge of the diverticulum, and, owing to the lattersdirection forwards and upwards, the sharp edge is on
. Journal of anatomy . Fig. 25«.. Fig. 26.—SeaL Fig. 26<t. 54 Mr G. Seccoinbe Hett and Mr H. G. Buttertield The early ftetal condition is represented by the tonsil of the leopard. That the three tonsillar masses of the f ostus are seen in certain mammals, bear and ox. The pars triangularis has its representative among the animals in theprojecting portion of the tonsil of the cats and Ijiixes. The plica semilunaris and plica triangularis represent the reflexion ofmucous membrane at the edge of the diverticulum, and, owing to the lattersdirection forwards and upwards, the sharp edge is only found on the upperand anterior aspect of the outlet. This is well marked in the tiger andleopard. Some types of human tonsils can be explained by a preponderance ofone or other fct-tal masses. Other forms are due to lymphoid proliferationon the j)lica triangularis or plica semilunaris. In certain human tonsils the plica triangularis, free, but containinglymphoid tissue beneath its mucous membrane, forms the greater part ofth
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectanatomy, bookyear1867
