canal of Corti

canal of Corti

Etymology: Alfonso Corti, Italian anatomist, 1822-1888

a space between the inner and outer rods and the basilar membrane of the cochlea in the organ of Corti. Also called Corti's tunnel.

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canal

a relatively narrow tubular passage or channel.

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accessory canal

see lateral canal (below).

alar canal

in the body of the basisphenoid bone, transmits the maxillary artery.

alimentary canal

the digestive tube from mouth to anus. See also alimentary canal.

anal canal

the terminal portion of the alimentary canal, from the rectum to the anus.

atrioventricular canal

the common canal connecting the primitive 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.

carpal canal

on the palmar surface of the equine carpus where the carpal groove is converted into a canal by the flexor retinaculum which stretches from the accessory carpal bone to the medial side of the carpus. It houses the flexor tendons.

central brain canal

lumen of the neural tube of the embryo within the brain.

cervical canal

the part of the uterine cavity lying within the cervix.

condyloid canal

in the occipital bone; transmits a vein.

canal of Corti

a space between the outer and inner rods of Corti.

external ear canal

the canal from the external auditory meatus to the eardrum.

facial canal

osseous tube in the temporal bone that transmits the facial nerve.

femoral canal

in the groin on the medial aspect of the thigh; contains the femoral artery and vein.

c's of Gartner

in the ventral wall of the vagina; they are remnants of the mesonephric ducts and very variable in their occurrence. Called also ductus epoophori longitudinales.

haversian canal

see haversian canal.

c's of Hering

openings between the bile canaliculi and the cholangioles, the terminal ducts of the biliary duct system. Called also cholangiole.

hyaloid canal

central canal of the vitreous humor running from the lens to the optic disk.

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 canal running obliquely from the front of the orbit to the side of the muzzle, transmitting the infraorbital vessels and nerve. In the horse it passes through the maxillary sinus.

inguinal canal

the oblique passage in the caudal abdominal wall on either side, through which passes the round ligament of the uterus in some females such as the bitch and the spermatic cord in the males.

intestinal canal

small and large intestines.

lacrimal canal

the nasolacrimal canal.

lateral canal

a small canal in the root of a tooth which emerges on the side, rather than the apex. Called also accessory canal.

mandibular canal

a passageway within the mandible for conduction of the inferior alveolar vessels and nerve; the inferior alveolar nerve enters the mandibular canal through the mandibular foramen and exits at the mental foramen supplying nerves to the lower cheek teeth in passing.

medullary canal

1. vertebral canal.

2. the cavity, containing marrow, in the diaphysis of a long bone; called also marrow or medullary cavity.

metatarsal canal

formed by the metatarsal fascia on the plantar aspect of the chief metatarsal bone of the horse; transmits the tendons of the digital flexor muscles.

modiolar canal

in the cochlea of the internal ear; it transmits blood vessels and nerves to the cochlea.

nasolacrimal canal

in the maxilla it transmits the nasolacrimal duct.

nutrient c's

large vascular canals through the cortex of bones. See also haversian canal.

omasal canal

the direct passage through the omasum from the reticulum to the abomasum.

optic canal

a passage for the optic nerve through the cranium into the orbit.

palatine canal

formed by the maxilla and the palatine bone; transmits the palatine artery and nerve.

pterygoid canal

in the basisphenoid bone; contains the pterygoid nerve.

root canal

see root canal.

sacral canal

the part of the vertebral canal through the sacrum.

Schlemm's canal

the venous sinus of the sclera, a circular canal at the junction of the sclera and cornea that receives the aqueous humour. Called also scleral venous sinus.

semicircular c's

the canals (anterior, lateral and posterior) of the bony labyrinth of the ear. See also semicircular canals.

spinal canal, vertebral canal

the canal formed by the series of vertebral foramina together, enclosing the spinal cord and meninges.

supraorbital canal

in the frontal bone; transmits the frontal vein, passing through the zygomatic process to the orbital cavity.

tarsal canal

formed by the plantar annular ligament of the tarsus which roofs over the tarsal groove; transmits the deep digital flexor tendon and plantar vessels.

triosseus canal

the foramen at the junction of the coracoid, clavicle and scapula which transmits the tendon of a flight muscle, the supracoracoideus, in the avian skeleton.

vertebral canal

spinal canal.

Volkmann's c's

canals communicating with the haversian canals, for passage of blood vessels through bone from the periosteum.