Inguinal Canal: From 1 Different Sources
either of a pair of openings that connect the abdominal cavity with the scrotum in the male fetus. The inguinal canals provide a route for the descent of the testes into the scrotum, after which they normally become obliterated.
An extrusion of the abdominal PERITONEUM, sometimes containing a loop of bowel, through natural openings in the region of either groin (see HERNIA).... inguinal hernia
See GASTROINTESTINAL TRACT.... alimentary canal
The passage that extends from the neck of the womb (UTERUS), known as the CERVIX UTERI, to the opening of the VAGINA. The baby passes along this passage during childbirth.... birth canal
Canaliculus means a small channel, and is applied to (a) the minute passage leading from the lacrimal pore on each eyelid to the lacrimal sac on the side of the nose; (b) any one of the minute canals in bone.... canaliculus
Relating to the groin (the area between the abdomen and thigh), as in inguinal hernia.... inguinal
The ?ne canals in BONE which carry the blood vessels, lymphatics and nerves necessary for the maintenance and repair of bone.... haversian canals
Lymph nodes in the groin, next to the genitalia... inguinal nodes
The groin – that area of the body where the lower part of the abdomen meets the upper thigh. The inguinal ligaments extend on each side from the superior spines of the iliac bones to the pubic bone. It is also called Poupart’s ligament (see diagram of ABDOMEN).... inguinal region
A structure in the inner ear that plays a role in balance. There are 3 semicircular canals in each ear, at right angles to each other, and connected via a chamber called the vestibule. The fluid-filled canals contain small hairs that detect movement and acceleration, and transmit information to the brain via the vestibular nerve.... semicircular canal
the terminal portion of the large intestine, which is surrounded by the muscles of defecation (anal sphincters). The canal ends on the surface at the anal orifice (see anus).... anal canal
(auditory meatus) the canal leading from the pinna to the eardrum.... auditory canal
n. a tubular channel or passage; e.g. the *alimentary canal and the auditory canal of the ear.... canal
n. inflammation of a canaliculus, especially a lacrimal canaliculus (see lacrimal apparatus).... canaliculitis
n. a particle derived from *otoliths in the *utricle of the inner ear, displaced from its normal site and located within the canal portion of one of the semicircular canals. Canaliths are implicated in *benign paroxysmal positional vertigo.... canalith
one of the small canals (diameter about 50 ?m) that ramify throughout compact *bone. See also Haversian system. [C. Havers (1650–1702), English anatomist]... haversian canal
a channel within the vitreous humour of the *eye. It extends from the centre of the optic disc, where it communicates with the lymph spaces of the optic nerve, to the posterior wall of the lens.... hyaloid canal
a bony canal in the *mandible on each side. It carries the inferior *dental nerve and vessels and for part of its length its outline is visible on a radiograph.... inferior dental canal
(Poupart’s ligament) a ligament in the groin that extends from the anterior superior iliac spine to the pubic tubercle. It is part of the *aponeurosis of the external oblique muscle of the abdomen.... inguinal ligament
see apicectomy.... retrograde root canal treatment
a channel in the eye, at the junction of the cornea and the sclera, through which the aqueous humour drains. [F. Schlemm (1795–1858), German anatomist]... schlemm’s canal
three tubes that form part of the membranous *labyrinth of the ear. They are concerned with balance and each canal registers movement in a different plane. At the base of each canal is a small swelling (an ampulla), which contains a *crista. When the head moves the fluid (endolymph) in the canals presses on the cristae, which register the movement and send nerve impulses to the brain.... semicircular canals
(SCDS) a rare condition characterized by sound- or pressure-induced vertigo (see Tullio phenomenon), hearing loss, *autophony, and a sense of fullness in the affected ear. It is associated with absence of the bone that normally lies over the superior *semicircular canal. Diagnosis involves computerized tomography and *vestibular evoked myogenic potential testing. Treatment involves surgery to repair the bony defect.... superior canal dehiscence syndrome
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