Opening
Of passage. May also be referred to as orifice and porta.
An aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart".
This concept's ID is @1~28702
Contains
- mouth
The externally visible part of the oral cavity on the face and the system of organs surrounding...
- rima
A narrow elongated opening or fissure between two symmetrical parts.
- anus
The excretory opening at the end of the alimentary canal.
- fenestra
A small opening covered with membrane (especially one in the bone between the middle and...
- soft spot
Any membranous gap between the bones of the cranium in an infant or fetus.
- spiracle
A breathing orifice.
- naris
Any of the openings to the nasal cavities that allow air to flow through the cavities to the...
- cervix
Necklike opening to the uterus.
- pylorus
A small circular opening between the stomach and the duodenum.
- vent
External opening of urinary or genital system of a lower vertebrate.
- aortic orifice
The orifice from the lower left chamber of the heart to the aorta.
- stoma
A mouth or mouthlike opening (especially one created by surgery on the surface of the body...
- urethral orifice
The orifice through which urine is discharged.
- porta hepatis
Opening for major blood vessels to enter and leave the liver.
- introitus
Entrance or opening to a hollow organ or tube (especially the vaginal opening); "the introitus...
- blastopore
The opening into the archenteron.
- cardia
The opening into the stomach and that part of the stomach connected to the esophagus.
- os
A mouth or mouthlike opening.