hypoglossal canal


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canal

 [kah-nal´]
a relatively narrow tubular passage or channel.
adductor canal Hunter's canal.
Alcock's canal a tunnel formed by a splitting of the obturator fascia, which encloses the pudendal vessels and nerve.
alimentary canal see alimentary canal.
anal canal the terminal portion of the alimentary canal, from the rectum to the anus.
atrioventricular canal the common canal connecting the primordial atrium and ventricle; it sometimes persists as a congenital anomaly.
birth canal the canal through which the fetus passes in birth.
carotid canal one in the pars petrosa of the temporal bone, transmitting the internal carotid artery to the cranial cavity.
cervical canal the part of the uterine cavity lying within the cervix.
condylar canal an occasional opening in the condylar fossa for transmission of the transverse sinus; called also posterior condyloid foramen.
canal of Corti a space between the outer and inner rods of Corti.
femoral canal the cone-shaped medial part of the femoral sheath lateral to the base of Gimbernat's ligament.
haversian canal any of the anastomosing channels of the haversian system in compact bone, containing blood and lymph vessels, and nerves.
Hunter's canal a fascial tunnel in the middle third of the medial part of the thigh, containing the femoral vessels and saphenous nerve. Called also adductor canal.
hypoglossal canal an opening in the occipital bone, transmitting the hypoglossal nerve and a branch of the posterior meningeal artery; called also anterior condyloid foramen.
infraorbital canal a small canal running obliquely through the floor of the orbit, transmitting the infraorbital vessels and nerve.
inguinal canal the oblique passage in the lower anterior abdominal wall on either side, through which passes the round ligament of the uterus in the female, and the spermatic cord in the male.
medullary canal
optic canal a passage for the optic nerve and ophthalmic artery at the apex of the orbit; called also optic foramen.
pulp canal root canal.
root canal that part of the pulp cavity extending from the pulp chamber to the apical foramen. Called also pulp canal.
sacral canal the continuation of the spinal canal through the sacrum.
Schlemm's canal venous sinus of sclera.
semicircular c's see semicircular canals.
spinal canal (vertebral canal) the canal formed by the series of vertebral foramina together, enclosing the spinal cord and meninges.
Volkmann's c's canals communicating with the haversian canals, for passage of blood vessels through bone.

hy·po·glos·sal ca·nal

[TA]
the canal through which the hypoglossal nerve emerges from the skull.

hy·po·glos·sal ca·nal

(hī'pō-glos'ăl kă-nal') [TA]
The canal through which the hypoglossal nerve emerges from the skull.
Synonym(s): canalis hypoglossalis [TA] , anterior condyloid foramen.

hy·po·glos·sal ca·nal

(hī'pō-glos'ăl kă-nal') [TA]
Canal through which the hypoglossal nerve emerges from the skull.
Synonym(s): anterior condyloid foramen.
References in periodicals archive ?
(2006) has described the morphometry and variations of the hypoglossal canal and occipital condyle.
(2012) reported an irregular trapezoid like shape on the clivus by linking the bilateral medial external margin of the hypoglossal canal, foramen lacerum and the apex of the extracranial clivus, which is a safer area for entry points.
(2003), "Hypoglossal Canal Size in Living Hominoids and the Evolution of Human Speech," Human Biology 75: 473-484.
The hypoglossal canals, a pair of bony tubes located on the left and right sides of the skull's base, were nominated just last year as skeletal signposts of speech.
The findings challenge a proposal that relatively large hypoglossal canals in the skulls of human ancestors who lived about 400,000 years ago reflect their ability to talk much like people do today (SN: 5/2/98, p.
The removal of approximately the posterior 1/3rd of occipital condyle is required to reach the lateral aspect of the intracranial end of the hypoglossal canal. This is located about 5 mm below the jugular tubercle and 5mm above the junction of posterior and middle third of the occipital condyle.
Again, the tumor had invaded the occipital condyle and the hypoglossal canal on the left.
Although several smaller nerves also traverse the hypoglossal canal, the Duke researchers argue that its enlargement in fossil hominids reflects growth of the hypoglossal nerve to coordinate the tongue movements needed for speaking.
This maneuver is the key to achieving the desired exposure, and it greatly enhances access to the clivus and to the most medial portion of the occipital condyle, which we resected up to the hypoglossal canal. Perhaps most important, this maneuver provides ventral and caudal access to the top of the dens and to the related anterior tubercle of C1 and the associated paraspinal strap muscles.