Endocrine Glands in Insects
Here endocrine structures in insects will be discussed according to their origin. Endocrine Organs of Nervous Origin: In insects, neurosecretory cells are numerous and have important functions. Recent work has revealed that there are two types of neurosecretory cells: type A which stain with para-aldehyde fuchsin, and type B which do not. All cells possess electron dense granules. The neurosecretory [...]