Carpenter's principles of human physiology . 732 OF THE ORGANS OF THE SENSES, AND THEIR and fovea centralis are con-siderable. Nearly in the axisof vision an intensely yellowpigment is deposited betweenthe elements of the differentlayers, with the exception ofthe bacillar and externalgranular layer. The centreof the yellow spot is depressedanteriorly (Fig. 269) to formthe fovea centralis. The retinais thicker at the macula lutea,of course excepting at the foveacentralis, than in the adjoiningparts, and is at the same timesofter and more prone to post-mortem change, probably inconse
Carpenter's principles of human physiology . 732 OF THE ORGANS OF THE SENSES, AND THEIR and fovea centralis are con-siderable. Nearly in the axisof vision an intensely yellowpigment is deposited betweenthe elements of the differentlayers, with the exception ofthe bacillar and externalgranular layer. The centreof the yellow spot is depressedanteriorly (Fig. 269) to formthe fovea centralis. The retinais thicker at the macula lutea,of course excepting at the foveacentralis, than in the adjoiningparts, and is at the same timesofter and more prone to post-mortem change, probably inconsequence of the deficiencyof the radial supporting con-nective tissue. The layer ofthe ganglion cells and internaldivision of the external granulelayer, are the layers that aremost obviously thickened. Onthe other hand, there is nocontinuous layer - of nerve-fibres beneath the membranelimitans interna. The rodsare altogether deficient, theirplace being taken by the cones,which become longer and nar-rower, and are closely packed,about 185 being contained inthe l-100th part of a squaremillimeter. T
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectphysiology, bookyear1
