cervix
It is called the cervix. In a woman who has never had a baby, it is not at all 'dilated' (open). It is described as being 0cm dilated. After a woman has had a baby, her cervix generally stays at around 1cm dilated.
its called the cervix. cancer caused to cervix called cervical cancer.
It's called Cervix.
internal os
cervix
The cervix, or cervix uteri, is the ring of muscle found at the base of the uterus.
Nothing. The anus is the opening of the digestive tract. The opening is closed by the sphincter which is a strong ring of muscle.
It's from a Latin word meaning "ring" because it's a ring of muscle.
The opening between the stomach and the small intestine is called the Pyloric Sphincter- it is a ring of muscle that contracts when the stomach is full, to seal off the opening to the small intestine whilst foodstuffs are liquified in the stomach. When this has been done, the sphincter muscle relaxes, re-opening the channel to allow the liquified nutrients into the intestines.
An abdominal ring is either of the two openings in the abdominal muscle wall allowing the inguinal canal to pass through.
The Iris.
The iris.
A captive bead ring is a ring where then opening is blocked by a bead held captive in the opening of the ring by the tension of the ring.
The anal canal has a ring of muscle, called the anal sphincter
No, a tampon cannot get stuck in the uterus. Tampons sit within the vaginal canal, at the top of the vaginal canal is the cervix which is the opening to the uterus - the opening within the cervix is too small for a tampon to pass through, also the tampon sits slightly lower down than the cervix.
a ring of muscle that controls the release of an organs products. EXAMPLE: Pyloric Sphincter controls release of chyme. Cardiac Sphincter controls deposition of food into the stomach from the esophagus. External Urethral Sphincter controls release of urine. External Anal Sphincter controls release of defecation.
The iris is not at the back of the eye. The structure at the back of the eye (on the inside) is called the retina. That's the part that senses light. The iris is a structure at the front of the eye, consisting of a ring of muscle with an opening in the center, called a pupil. The iris can shrink the pupil, to admit less light, or expand the pupil to a larger size to admit more light. Eye color is deterimned by the iris. It is the only colorful muscle.