The mesogloea in the hydropolyp is a thin elastic layer, in which may be lodged the muscular fibres and ganglion cells mentioned above, but which never contains any connective tissue or skeletogenous cells or any other kind of special mesogloeal corpuscles. [Please select]
0
, (i) an outer cellular layer of comparatively small cells, the ectoderm; (ii) an intermediate, structureless or apparently structureless layer, the mesogloea or "central jelly"; and (iii) an internal layer or endoderm consisting of relatively large cells. [Please select]
Do you have a better example in your mind? Please submit your sentence!