. The American journal of anatomy . Portfis. In Ponlis Figs. 4 to 7 Camera lucida tracings of sagittal sections through the rhomben-cephalon of human embryos from Prof. Malls collection. The nucleus facialis(Nu. vn) has been dotted in by profile reconstruction. Fig. 4 33 mm. fetus. X (No. 145, si. 19, sect. 3). Fig. 5 35 mm. fetus. X (No. 199, si. 37, sect. 1). Fig. 6 50 mm. fetus. X (No. 96, slide 48). Fig. 7 115 mm. fetus. X (No. 219, si. 40, sect. 4). DEVELOPMENT OF THE NUCLEI PONTUS IN MAN 37 seen in the adult lower animals where the abducens nerve emergesfrom the brain
. The American journal of anatomy . Portfis. In Ponlis Figs. 4 to 7 Camera lucida tracings of sagittal sections through the rhomben-cephalon of human embryos from Prof. Malls collection. The nucleus facialis(Nu. vn) has been dotted in by profile reconstruction. Fig. 4 33 mm. fetus. X (No. 145, si. 19, sect. 3). Fig. 5 35 mm. fetus. X (No. 199, si. 37, sect. 1). Fig. 6 50 mm. fetus. X (No. 96, slide 48). Fig. 7 115 mm. fetus. X (No. 219, si. 40, sect. 4). DEVELOPMENT OF THE NUCLEI PONTUS IN MAN 37 seen in the adult lower animals where the abducens nerve emergesfrom the brain some distance behind the pontine formation. At 35 mm. (No. 199) the increased cellular activity around thewall of the fourth ventricle is shown by the great numbers ofdividing cells and the twofold increase in depth of the migratingcolumn passing between the facial and acoustic nerves. Alreadythe neuroblasts which are crowding from both sides toward themidline have piled up over the ventral surface of the brain, sothat, near the raphe, the
Size: 1380px × 1811px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1912
