Probably due to an error during embryonic development, the base of the right horn is missing (arrow). Uterine secretions that normally flow through the cervix have accumulated in the right uterine horn. When such an animal ovulates from the ovary ipsilateral to the blocked uterine horn, the corpus luteum persists due to lack of a lutelolytic  prostaglandin signal from the defective horn. Fertility is normal when ovulation occurs on the intact side.

Incomplete bovine uterus

Credit: Tanabe TY and Almquist JO (1966)

Digital Credit: Maarten Drost

Publisher: None

Rights: Name must appear as a credit whenever the image is used -

Description: Probably due to an error during embryonic development, the base of the right horn is missing (arrow). Uterine secretions that normally flow through the cervix have accumulated in the right uterine horn. When such an animal ovulates from the ovary ipsilateral to the blocked uterine horn, the corpus luteum persists due to lack of a lutelolytic prostaglandin signal from the defective horn. Fertility is normal when ovulation occurs on the intact side.

Resolution: 600x393

File Size: 148.37 KB