| lamina arcus vertebrae | The flattened posterior portion of the vertebral arch extending between the pedicles and the midline, forming the dorsal wall of the vertebral foramen, and from the midline junction of which the spinous process extends. Synonym: lamina arcus vertebrae, neurapophysis. (05 Mar 2000) |
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| lumbar vertebrae | The vertebrae, usually five in number, located in the lumbar region of the back. Synonym: vertebrae lumbales. (05 Mar 2000) |
| ansa cervicalis | A loop in the cervical plexus consisting of fibres from the first three cervical nerves. Fibres from a loop between the C-1 and C-2 spinal nerves accompany the hypoglossal nerve for a short distance, leaving it as the superior root of the ansa cervicalis. Fibres from a loop between the C-2 and C-3 spinal nerves form the inferior root of the ansa cervicalis. Most commonly, the roots merge, forming the ansa cervicalis, which gives rise to branches innervating infrahyoid muscles. Synonym: cervical loop, loop of hypoglossal nerve. (05 Mar 2000) |
| arteria cervicalis ascendens | <anatomy, artery> Origin, usually a terminal branch of the thyrocervical trunk (along with interior thyroid artery); distribution, muscles of neck and spinal cord; anastomoses, branches of vertebral, occipital, ascending pharyngeal, and deep cervical. Synonym: arteria cervicalis ascendens, cervicalis ascendens. (05 Mar 2000) |
| arteria cervicalis profunda | <anatomy, artery> Origin, terminal branch of costocervical trunk (along with superior intercostal artery); distribution, posterior deep muscles of neck; anastomoses, branches of occipital, ascending cervical, and vertebral. Synonym: arteria cervicalis profunda. (05 Mar 2000) |
| arteria cervicalis superficialis | <anatomy, artery> Origin, branch of thyrocervical trunk, running with spinal accessory nerve deep to trapezius muscle. See: superficial branch of the transverse cervical artery. Synonym: arteria cervicalis superficialis. (05 Mar 2000) |
| radix inferior ansae cervicalis | Fibres from the second and third cervical nerves that pass forward and downward along the internal jugular vein; they contribute to the ansa cervicalis and innervate the infrahyoid muscles. Synonym: descendens cervicalis, radix inferior ansae cervicalis. (05 Mar 2000) |
| radix superior ansae cervicalis | The fibres that arise from the first and second cervical nerves, accompany the hypoglossal nerve, then branch off to meet the inferior root in the ansa cervicalis; they innervate the infrahyoid muscles. Synonym: descendens hypoglossi, descending branch of hypoglossal nerve, radix superior ansae cervicalis. (05 Mar 2000) |
| rami inferiores nervi transversi cervicalis | <anatomy, nerve> Branch of transverse cervical nerve providing cutaneous innervation in lower part of anterior triangle of neck. Synonym: rami inferiores nervi transversi cervicalis [colli]. (05 Mar 2000) |
| rami laryngopharyngei ganglii cervicalis superioris | Branches conveying postganglionic sympathetic fibres from the superior cervical ganglion to the pharyngeal plexus. Synonym: rami laryngopharyngei ganglii cervicalis superioris. (05 Mar 2000) |
| ramus cervicalis nervi facialis | An alternate term for cervical branch of facial nerve. Ramus chiasmaticus, the chiasmatic branch, a branch of the middle cerebral artery to the optic chiasm. (05 Mar 2000) |
| ramus superior nervi transversalis cervicalis | <anatomy, nerve> Branch providing cutaneous innervation in upper part of anterior triangle of neck. Synonym: ramus superior nervi transversalis cervicalis (colli). (05 Mar 2000) |
| vena cervicalis profunda | <anatomy, vein> Large vein running with the artery of the same name between the semispinalis capitis and semispinalis cervicis draining the deep muscles at the back of the neck and emptying into the brachiocephalic or the vertebral vein. Synonym: vena cervicalis profunda. (05 Mar 2000) |
| ramus thyrohyoideus ansae cervicalis | <anatomy> The thyrohyoid branch, contains fibres of the first and second cervical nerves that have accompanied the hypoglossal nerve to the suprahyoid region, then branch from it to reach the thyrohyoid muscle. Synonym: ramus thyrohyoideus ansae cervicalis. (05 Mar 2000) |
| pars cervicalis arteriae carotidis internae | <anatomy, artery> The unbranched portion located in the neck. Synonym: pars cervicalis arteriae carotidis internae. (05 Mar 2000) |