Uterine cavity and cervical canal
Cavitas uteri
ReproductiveOrgansPelvis
Shown on the female body.
- What it is
- Slit-like space, triangular when seen from the front, with the tubal openings at its upper corners and the internal os below, continuing through the spindle-shaped cervical canal to the external os.
- Function
- Pathway for sperm upward and menstrual blood and the baby downward; the site of implantation.
- Size
- About 6–7 cm from external os to fundus (cavity ~4 cm, cervical canal ~2.5–3 cm).
- Clinical note
- An intrauterine device (IUD) sits in this cavity with its arms in the upper corners.