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Secreting glands may be classified according to certain types. Shown are plans of extension of secreting membrane by inversion or recession in form of cavities. A, simple glands, viz., g, straight tube; h, sac; i, coiled tube. B, multilocular crypts; k, of tubular form; l, saccular. c, racemose, or saccular compound gland; m, entire gland, showing branched duct and lobular structure; n, a lobule, detached with o, branch of duct proceeding from it. D, compound tubular gland.

Secreting Gland

Secreting glands may be classified according to certain types. Shown are plans of extension of secreting…