| musculus scalenus anticus | <anatomy, muscle> Origin, anterior tubercles of transverse processes of third to sixth cervical vertebrae; insertion, scalene tubercle of first rib; action, raises first rib; nerve supply, cervical plexus. Synonym: musculus scalenus anterior, anterior scalene muscle, musculus scalenus anticus. (05 Mar 2000) |
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| scalenus anterior syndrome | <syndrome> One of the precursors of disputed neurogenic thoracic outlet syndrome; a popular cause for upper extremity discomfort in the late 1930s and 1940s, based on the unproven concept that the lower trunk and brachial plexus and subclavian artery could be compressed in the intrascalene triangle by hypertrophic scalenus anticus muscle, the compression in turn affecting the nerves to it and setting up a vicious circle; this concept was essentially abandoned in the 1950s, when real causes, such as cervical radiculopathy and carpal tunnel syndrome, for upper extremity symptoms were appreciated, but resurrected in the 1980s, without attribution, as aetiology for upper plexus type of disputed neurologic thoracic outlet syndrome. (05 Mar 2000) |
| anticus | A term in anatomical nomenclature to designate a muscle or other structure which of all similar structures is nearest the front or ventral surface. Nomina Anatomica uses "anterior" in place of this term. Origin: L. In the very front, fr. Ante, before (05 Mar 2000) |
| musculus rectus capitis anticus major | <anatomy, muscle> Origin, anterior tubercles of transverse processes of third to sixth cervical vertebrae; insertion, basilar process of occipital bone; action, twists or flexes neck anteriorly; nerve supply, cervical plexus. Synonym: musculus longus capitis, long muscle of head, musculus rectus capitis anticus major. (05 Mar 2000) |
| musculus rectus capitis anticus minor | <anatomy, muscle> Origin, transverse process and lateral mass of atlas; insertion, basilar process of occipital bone; action, turns and inclines head forward; nerve supply, ventral primary ramus of first and second cervical spinal nerve. Synonym: musculus rectus capitis anterior, anterior rectus muscle of head, musculus rectus capitis anticus minor. (05 Mar 2000) |
| musculus tibialis anticus | <anatomy, muscle> Origin, upper two-thirds of lateral surface of tibia, interosseous membrane, and intermuscular septum; insertion, medial cuneiform and base of first metatarsal; action, dorsiflexion and inversion of foot; nerve supply, deep peroneal. Synonym: musculus tibialis anterior, anterior tibial muscle, musculus tibialis anticus. (05 Mar 2000) |
| tetanus anticus | <medicine> A drawing of the body forward, in consequence of the spasmodic action of some of the muscles. Origin: NL, fr. Gr. Forward + to draw. Source: Websters Dictionary (01 Mar 1998) |
| locus perforatus anticus | A region at the base of the brain through which numerous small branches of the anterior and middle cerebral arteries (lenticulostriate arteries) enter the depth of the cerebral hemisphere; it is bordered medially by the optic chasm and anterior half of the optic tract, rostrally and laterally by the lateral olfactory stria; its anteromedial part corresponds to the olfactory tubercle. Synonym: substantia perforata anterior, locus perforatus anticus, olfactory area. (05 Mar 2000) |
| musculus scalenus anterior | scalenus anterior muscle |
| musculus scalenus medius | <anatomy, muscle> Origin, costotransverse lamellae of transverse processes of second to sixth cervical vertebrae; insertion, first rib posterior to subclavian artery; action, raises first rib; nerve supply, cervical plexus. Synonym: musculus scalenus medius, middle scalene muscle. (05 Mar 2000) |
| musculus scalenus minimus | <anatomy> An occasional independent muscular fasciculus between the scalenus anterior and medius, and having the same action and innervation. Synonym: musculus scalenus minimus, Albinus' muscle, Sibson's muscle, smallest scalene muscle. (05 Mar 2000) |
| musculus scalenus posterior | <anatomy, muscle> Origin, posterior tubercles of transverse processes of fourth to sixth cervical vertebrae; insertion, lateral surface of second rib; action, elevates second rib; nerve supply, cervical and brachial plexuses. Synonym: musculus scalenus posterior, musculus scalenus posticus, posterior scalene muscle. (05 Mar 2000) |
| musculus scalenus posticus | <anatomy, muscle> Origin, posterior tubercles of transverse processes of fourth to sixth cervical vertebrae; insertion, lateral surface of second rib; action, elevates second rib; nerve supply, cervical and brachial plexuses. Synonym: musculus scalenus posterior, musculus scalenus posticus, posterior scalene muscle. (05 Mar 2000) |
| scalenus | Synonym: scalene. Origin: L. (05 Mar 2000) |
| scalenus anterior | <anatomy, muscle> Origin, anterior tubercles of transverse processes of third to sixth cervical vertebrae; insertion, scalene tubercle of first rib; action, raises first rib; nerve supply, cervical plexus. Synonym: musculus scalenus anterior, anterior scalene muscle, musculus scalenus anticus. (05 Mar 2000) |