Orifice

Ureteroceles can cause significant anatomic distortion to other surrounding structures such as the ureteral orifice of the other kidney (contralateral), the trigone and the bladder neck.
Full article >>>

The hymen is a membranous fold of tissue that covers the external vaginal orifice. The biological function of the human hymen is still uncertain; scientists hypothesize that it protects the vagina from infection in infants.
Full article >>>

This fold of mucous membrane is usually present at birth at the orifice of the vagina. In medicine, it is called the vaginal membrane or the hymen. Hymen is a Greek word meaning "skin" or "membrane.
Full article >>>

Lacrimal ductA short canal leading from a small orifice at the medial angle of each eyelid to the lacrimal sac.
Lacrimal glandAn almond-shaped gland that secretes tears.
Full article >>>

The liquid medication (insulin) is forced at high speed through a tiny orifice that is held against the skin; a very fine, high-pressure stream of medication penetrates the skin and is deposited in the tissue beneath.
Full article >>>

A narrowing or constriction of the diameter of a passage or orifice, such as a blood vessel.
Resources:
Books ...
Full article >>>

Other ways people injure themselves include scratching, picking, biting, scraping and occasionally inserting sharp objects under the skin or into body orifices and swallowing sharp objects or harmful substances.
Full article >>>

Because of the high incidence of tumor recurrence within the intramural ureter among patients who have had incomplete excision of this area, nephroureterectomy should include the entire ureter and a margin of periureteral orifice mucosa ('bladder ...
Full article >>>


'"/>