secretory part
secretory portion

This is the secretory part of the stomach.

In the second main variety of gland the secretory portion is enlarged and the lumen variously increased in size.

Alveolar glands have a saclike secretory portion, thus are also termed saccular glands.

This material includes glycosaminoglycans, proteins such as lysozymes, and conjugation of the secretory portion of IgA antibodies.