The ovary is exceptional, on account of the large size of the stroma ingrowths into the epithelium.
It shews the vascular ingrowths amongst the original epithelial cells of the ovarian region.
We see that the horny laminæ are ingrowths of the rete Malpighii, ploughing into and excavating the corium into the shape of leaves--the sensitive laminæ.
The nests are, moreover, much more cut up by connective tissue ingrowths than in the previous stages.
It is obvious in figure 37 that the vascular ingrowths are so arranged as imperfectly to divide the germinal epithelium into two layers separated by a space with connective tissue and blood-vessels.
In the innermost layer of the germinal epithelium the outlines of the original large nests are still visible, but many of the follicles have been cut off by ingrowths of stroma.
In still later stages the stroma ingrowths form a more or less definite tunic close to the surface of the ovary.
The general appearance of the germinal epithelium at this stage certainly appears to me to lend support to my view that the whole of it simply constitutes a thickened epithelium interpenetrated with ingrowths of stroma.
It is, therefore, highly probable that the pairedingrowths of the mesoblast from the lips of the blastopore may have been, in the first instance, derived from a pair of archenteric diverticula.
The isolated follicles at this stage are formed by ingrowths of connective tissue cutting off fully formed follicles from a nest.
The lobes are not separated from each other by connective tissue prolongations; the epithelium being at this stage perfectly free from any ingrowths of stroma.
The ingrowths of the stroma are, moreover, directed towards individual ova, around which, outside the follicular epithelium, they form a special vascular investment in the succeeding stages.
In this ovary, although no other abnormalities were observable, the stroma ingrowths were exceptionally wide; indeed, quite without a parallel in my series of ovaries in this respect.
Whether the segmental tubes are formed as ingrowths of the peritoneal epithelium, or in situ, could not be determined.
The ends of these ingrowths dilate to form the true glandular part of the organs, while the stalks connecting the glandular portions with the surface form the ducts.
It is, therefore, highly probable that the pairedingrowths of the mesoblast from the lips of the blastopore may have been in the first instance derived from a pair of archenteric diverticula.
In Mammalia it appears that these glands are always formed as solid ingrowths of the mucous layer (Koelliker, No.
They arise (Remak, Koelliker) as solid ingrowths of the conjunctival epithelium.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "ingrowths" in a variety of sentences. We hope that you will now be able to make sentences using this word.
