Ostium
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Script error: No such module "Side box". An ostium (Template:Plural form: ostia) in anatomy is a small opening or orifice.
Ostia, not as a plural, is also the name of a number of places.
Ostium or ostia may refer to:
Human anatomy
- Ostium of fallopian tube
- Ostium of the uterus (disambiguation)
- Ostium primum of the developing heart
- Ostium secundum (foramen ovale) of the developing heart
- Ostium maxillare of the maxillary sinus
- Ostium vaginae (vaginal orifice)
- Coronary ostium – opening of coronary arteries at root of aorta, superior to aortic valve
- Sinus ostium an opening that connects a sinus to the nasal cavity itself.
In other animals
- Ostium (sponges), the pores of living sponges
- Ostium (insect anatomy), of female Lepidoptera genitalia
See also
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