cervical os

One of two openings in the uterine cervix. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the cervical os is

One of two openings in the uterine cervix. The atlas records it as a organ at the organ scale in the human body.

Where the cervical os is

It sits within the reproductive system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What the cervical os connects to

The atlas records 6 typed relationships for it, across 3 kinds of connection. part of reproductive system and uterine cervix.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the cervical os. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as cervical opening and uterine cervix opening. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0013758, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: reproductive system and uterine cervix.
• A kind of: anatomical structure and orifice.
• subtype: external cervical os and internal cervical os.

Questions

Where is the cervical os?

It sits within the reproductive system. Not positioned individually. Drawn inside the structure this dataset says contains it — the containment is asserted, the exact spot within it is not.

What does the cervical os connect to?

Part of: reproductive system and uterine cervix.

Is the cervical os the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.