spinal canal

Spinal canal

The opening that runs through the center of the column of spinal bones (vertebrae), and through which the spinal cord passes.

Mentioned in: Achondroplasia, Cerebrospinal Fluid (CSF) Analysis

spinal canal,

the cavity within the vertebral column.

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

1. spinal canal.

2. marrow cavity.

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.

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