A short study of the seminal colliculus in some mammals.

The seminal colliculus is completely absent in the donkey. It is fibroglandular in the males of camel, ox, buffalo and pig. Prostatic acini are richly found in its depth. They are lined by cubical or low columnar epithelium, are separated from each other by trabeculae of connective tissue and smooth muscle, and separated from the deeper prostrate gland by the striated muscle of the urethra. A rare type of seminal colliculus was once encountered in the ox. This type is muscular with autonomic ganglia and complete absence of glandular acini. It seems that the seminal colliculus shares the prostate in its glandular functions and prevents oozing of semen from the seminal ducts.