male reproductive gland accessory sex gland 2010-10-05T09:32:58Z BTO:0004798 BrendaTissueOBO Male accessory glands in humans are the seminal vesicles, prostate gland, and the bulbourethral glands. In insects, male accessory glands produce products that mix with the sperm to protect and preserve them. accessory gonad accessory gonadal gland male accessory gland mgr