The columella, a structure which occupies the centre of the calicle, and may arise from the basal plate, when it is called essential, or may be formed by union of trabecular offsets of the septa, when it is called unessential.
The trabecular floor of the brain does not long remain simple.
Some of its cells become elongated, and send out processes which uniting with like processes from other cells form the trabecular system.
The cartilaginous walls which grow up from the trabecular floor of the cranium generally extend upwards so as to form a roof, though almost always an imperfect roof, for the cranial cavity.
The subsequent degeneration and death of the granulation tissue under the necrotic influence of bacterial toxins results in disintegration and crumbling away of the trabecular framework of the portion of bone affected.
The trabecular framework of the bone undergoes erosion and absorption--rarefying ostitis--and either disappears altogether or only irregular fragments or sequestra of microscopic dimensions remain in the area affected.
The term caries is employed to indicate any diseased process associated with crumbling away of the trabecular framework of a bone.
The term is now restricted to such a growth made up of aggregations of epithelial cells, either without support or embedded in the meshes of a trabecular framework.
Kopf Acipenser, Munchen, 1893), and from the nature of other recent work on the genesis of parts of the cranium hitherto thought to be wholly trabecular in origin, it might well be further upheld.
Craniata, and in the Branchiostomidae (in which the trabecular arch is undifferentiated), is readily explained.
This chamber is bounded by the lower lip ventrally, the upper lip and trabecular region dorsally, and the remains of the septum or velum laterally and posteriorly.
In an earlier stage of Ammocoetes the two trabecular horns do not meet, but are separated by connective tissue, which afterwards becomes cartilaginous.
The latter, in Ammocoetes, form a pair of cartilaginous bars, which unite the trabecular bars with the branchial cartilaginous basket-work.
We may therefore conclude, from the investigation of Ammocoetes, that the front part of the basi-cranial skeleton arose as two trabecular bars, to which muscles were attached, situated bilaterally with respect to the central nervous system.
There is thus formed a kind oftrabecular work of tissue in the stroma of the ovary, which in the Lacertilia comes into connection with the germinal epithelium in both sexes, but in Ophidia in the male only.
This tissue is formed of trabecular work, like that of lymphatic glands, in the meshes of which an immense number of cells are placed, which may fairly be compared with the similarly placed cells of lymphatic glands.
Just in front, however, of the point where the ureter ends the true kidney substance rapidly thins out, and its place is taken by a peculiar tissue formed of a trabecular work filled with cells, which I shall in future call lymphatic tissue.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "trabecular" in a variety of sentences. We hope that you will now be able to make sentences using this word.
