Male accessory gland

[2] In insects, male accessory glands produce products that mix with the sperm to protect and preserve them, including seminal fluid proteins.

[3] Some insecticides can induce an increase in the protein content of the male accessory glands of certain types of insects.

[4] The accessory glands of male mammals secrete fluid for nourishment of sperm and sexual attraction.

Each of these branched tubular glands lined by simple columnar epithelium is an enlargement of the vas deferens in its terminal portion.

These are typical tubular glands in ruminants, horses and dogs; absent in the cat and poorly developed in boars.

All domestic species have these glands except the dog, and their mucus secretion serves to clear the urethra of urine and to lubricate it and the vagina.