| 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) |
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| 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) |
| nervus cardiacus cervicalis medius | <anatomy, nerve> One of the cardiopulmonary splanchnic nerves conveying postsynaptic sympathetic fibres running downward, from the middle cervical ganglion along the subclavian artery (on the left) or the brachiocephalic (on the right side) to join the cardiac plexus. Synonym: nervus cardiacus cervicalis medius. (05 Mar 2000) |
| nodus rectalis medius | A lymph node along the middle rectal artery that receives afferents from the pararectal nodes and sends efferents to the internal iliac nodes. Synonym: middle rectal node, nodus rectalis medius. (05 Mar 2000) |
| sulcus frontalis medius | A relatively shallow sagittal fissure of the brain dividing the middle frontal convolution into an upper and lower part; this sulcus is found only in humans and anthropoid apes; at its anterior extremity it bifurcates, the two branches spreading out laterally and constituting the frontomarginal sulcus. Synonym: median frontal sulcus, sulcus frontalis medius. (05 Mar 2000) |
| sulcus temporalis medius | The sulcus between the middle temporal gyrus and inferior temporal gyrus. Synonym: sulcus temporalis medius. (05 Mar 2000) |
| digitus medius | Third finger. Synonym: digitus medius, digitus tertius, third finger. (05 Mar 2000) |
| truncus | <zoology> The thorax of an insect. See Trunk. Origin: L. Source: Websters Dictionary (01 Mar 1998) |
| truncus arteriosus | <radiology> Right aortic arch (30-50%), VSD always immediately beneaath common truncal valve, waterfall or hilar comma sign (types II and III) TYPE, I short main pulmonary artery arises from left post-lat aspect, II pulmonary arteries arise separately from left post-lat aspect, III each pulmonary artery arises from lateral aspects, IV pulmonary arteries arise from dorsal aorta (pseudotruncus), probably tetralogy of Fallot with pulmonary atresia (12 Dec 1998) |
| truncus arteriosus communis | <radiology> Right aortic arch (30-50%), VSD always immediately beneaath common truncal valve, waterfall or hilar comma sign (types II and III) TYPE, I short main pulmonary artery arises from left post-lat aspect, II pulmonary arteries arise separately from left post-lat aspect, III each pulmonary artery arises from lateral aspects, IV pulmonary arteries arise from dorsal aorta (pseudotruncus), probably tetralogy of Fallot with pulmonary atresia (12 Dec 1998) |
| truncus arteriosus, persistent | A congenital anomaly resulting from the failure of the aorticopulmonary system to develop and divide the truncus arteriosus into the aorta and the pulmonary trunk. (12 Dec 1998) |
| truncus brachiocephalicus | The first and largest artery branching from the aortic arch. It distributes blood to the right side of the head and neck and to the right arm. (12 Dec 1998) |
| truncus bronchiomediastinalis | A lymphatic vessel arising from the union of the efferent lymphatics from the tracheo-bronchial and mediastinal nodes on either side. On the left side, it may be largely replaced by direct drainage into the thoracic duct. Synonym: truncus bronchiomediastinalis. (05 Mar 2000) |
| truncus coeliacus | Origin, abdominal aorta just below diaphragm; branches, left gastric, common hepatic, splenic. Synonym: truncus coeliacus, arteria coeliaca, coeliac artery, coeliac axis, Haller's tripod. (05 Mar 2000) |
| truncus corporis callosi | The main arched portion of the corpus callosum. Synonym: truncus corporis callosi. (05 Mar 2000) |