noun
- the posterior part of the alimentary canal in embryonic development, which forms the rectum and anal canal
Usage: embryology; anatomy
Examples
- The proctodaea develops during the early stages of embryonic growth.
- In vertebrate embryology, the proctodaea forms the terminal portion of the digestive tract.
- The proctodaea eventually gives rise to the rectum and anus.
- Developmental biologists study how the proctodaea connects with the hindgut.
- Abnormalities in proctodaea formation can lead to congenital digestive disorders.