Hypodermis Sentence Examples
The hypodermis is composed of parts of two different kinds, viz.
Exoskeleton The outer cellular layer (ectoderm or " hypodermis ") of insects as of other Arthropods, secretes a chitinous cuticle which has to be periodically shed and renewed during the growth of the animal.
This cellular layer is called the hypodermis; it is protected externally by a cuticle, a layer of matter it itself excretes, or in the excretion of which it plays, at any rate, an important part.
The cuticle contrasts strongly in its nature with the hypodermis it protects.
By histolysis certain parts of the hypodermis are destroyed, while other portions of it develop into the new structures.Advertisement
In such leaves, there are a well-marked cuticle, a thick epidermis, a thick hypodermis at least on the upper side of the leaf, well-developed palisade tissue, and a poorly developed system of air-spaces.
The adult caterpillar may be described as a creature the hypodermis of which is studded with Adapted from Koerschelt and buds that expand and form the butterHerder, and Lowne.
In other insects the imaginal disks are less completely disconnected from the superficies of the larval hypodermis, and may indeed be merely patches thereof.
Before a moult actually occurs the cuticle becomes separated from its connexion with the underlying hypodermis.
The imaginal disks for the outer wall of the body, some of them, at any rate, include mesodermal rudiments (from which the muscles are developed) as well as hypodermis.Advertisement
In Endopterygota the wings commence their development as invaginations of the hypodermis, while in Exopterygota the wings begin - and always remain - as external folds or evaginations.
The hypodermis is the immediate agent in effecting the external changes.