Internal orifice of the uterus

Internal orifice of the uterus
Posterior half of uterus and upper part of vagina.
Details
Latin	orificium internum uteri
Identifiers
Dorlands /Elsevier	o_06/13554423
TA
TH	{{#property:P1694}}
TE	{{#property:P1693}}
FMA	{{#property:P1402}}
Anatomical terminology [[[d:|edit on Wikidata]]]

The internal orifice of the uterus (or internal orifice of the cervix uteri or internal os) is an interior narrowing of the uterine cavity. It corresponds to a slight constriction known as the isthmus that can be observed on the surface of the uterus about midway between the apex and base.

See also

• External orifice of the uterus

References

This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)

External links

• Anatomy figure: 43:05-17 at Human Anatomy Online, SUNY Downstate Medical Center