Gland
yep
Parietal cells
They mostly secrete proteins...
They mostly secrete proteins...
it modifies substances produce by the ER(endoplasmic reticulum) and packages the subs into secretory vesicles.
that the animal once had a use for that structure depending on where it lived. or that it decended from an animal that had that structure and used it.
An insect is a type of animal. Any structure on an insect is, by definition, a structure on an animal.
The secretory system does not really exist. There is a secretory mechanism that is part of the endocrine system, and that secretes hormones into the blood stream.
The nucleus
Secretory endometrium refers to the phase in the menstrual cycle when the endometrial lining becomes thicker and richer in blood vessels and glands in preparation for potential implantation of a fertilized egg. This phase occurs after ovulation and is characterized by changes in the endometrial structure and composition to support a possible pregnancy.
The secretory epithelium is a part of the skin and associated with the sweat glands.
Gland