Noun:

மூலக்குடல்,

archenteron தமிழ் அர்த்தத்தின் உதாரணம்:

None

archenteron's Usage Examples:

In this stage the body is composed of two layers, ectoderm (d) externally, and endoderm (c) internally, surrounding a central cavity, the archenteron (b), which communicates with the exterior by a pore (a), the blastopore.

The cavity communicating with the blastopore and lined by the endoderm is the archenteron.

In the direct development Bateson showed that the three divisions of the coelom arise as pouches constricted off from the archenteron or primitive gut, thus resembling the development of the mesoblastic somites of Amphioxus.

The archenteron becomes the gastrovascular system or coelenteron.

The embryo now consists of two layers of cells, epiblast and hypoblast, surrounding a cavity, the archenteron, which opens to the exterior by the orifice of invagination or blastopore.

Formation of archenteron and blastopore may, however, be deferred till a later stage (actinula or after).

The archenteron gives off two lateral pounchs and thus becomes trilobed.

Some form their diblastula by emboly, others by epiboly; and in the later history of the further development of the enclosed cells (archenteron) very marked variations occur in closely-allied forms, due to the influence of a greater or less abundance of food-material mixed with the protoplasm of the egg.