Definitionn. animal tissue that constitutes the essential part of an organ as contrasted with e.g. connective tissue and blood vessels
Last update: October 23, 2015
0
We may distinguish the following series of stages: (I) ovum; (2) cleavage, leading to formation of a blastula; (3) formation of an inner mass or parenchyma, the future endoderm, by immigration or delamination, leading to the so-called parenchymula-stage; (4) formation of an archenteric cavity, the future coelenteron, by a splitting of the internal parenchyma, and of a blastopore, the future mouth, by perforation at one pole, leading to the gastrula-stage; (5) the outgrowth of tentacles round the mouth (blastopore), leading to the actinula-stage; and (6) the actinula becomes the polyp or medusa in the manner described elsewhere (see articles Hydrozoa, POLYP and Medusa). [Please select]
0
This is because the cells of their parenchyma are gorged with very minute solid particles of silt. [Please select]
0
_mollis_ both spicules and spongin are reduced to a minimum, and the parenchyma is relatively more bulky than usual. [Please select]
0
It is remarkable for the enormous number of microscleres in its parenchyma. [Please select]
0
Microscleres of the gemmule without a trace of rotules, those of the parenchyma birotulate CORVOSPONGILLA, nov. [Please select]
0
(Even in the latter case traces of the "green corpuscles" can be detected in the cells of the parenchyma.) [Please select]
Do you have a better example in your mind? Please submit your sentence!