| pectoral veins | Veins draining the pectoral muscles and emptying directly into the subclavian vein. Synonym: venae pectorales. (05 Mar 2000) |
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| greater pectoral muscle | <anatomy, muscle> Origin, clavicular part (pars clavicularis), medial half of clavicle; sternocostal part (pars sternocostalis), anterior surface of manubrium and body of sternum and cartilages of first to sixth ribs; abdominal part (pars abdominalis), aponeurosis of external oblique; insertion, crest of greater tubercle of humerus; action, adducts and medially rotates arm; nerve supply, anterior thoracic. Synonym: musculus pectoralis major, greater pectoral muscle. (05 Mar 2000) |
| smaller pectoral muscle | <anatomy, muscle> Origin, third to fifth ribs at the costochondral articulations; insertion, tip of coracoid process of scapula; action, draws down scapula or raises ribs; nerve supply, medial pectoral nerve. Synonym: musculus pectoralis minor, smaller pectoral muscle. (05 Mar 2000) |
| joints of pectoral girdle | The joints uniting the scapulae and clavicles to each other and the latter to the sternum forming the superior limb girdle; these are the acromioclavicular and the sternoclavicular joints. Synonym: articulationes cinguli membri superioris, joints of superior limb girdle, juncturae cinguli membri superioris. (05 Mar 2000) |
| lateral vein of lateral ventricle | A vein draining deep portions of the temporal and parietal lobes; it runs in the lateral wall of the lateral ventricle to terminate in the superior thalamostriate vein. Synonym: vena ventriculi lateralis lateralis, lateral atrial vein, lateral vein of lateral ventricle. (05 Mar 2000) |
| anterior intercostal arteries | One of the arteries supplying the anterior portions of the intercostal spaces of the thoracic wall. Anterior intercostal arteries 1-6 arise as branches of the internal thoracic artery; 7-11 arise as branches of the musculophrenic artery. Synonym: rami intercostales anteriores, rami intercostalis anteriores arteria thoracica interna. (05 Mar 2000) |
| anterior intercostal veins | Tributaries to the musculophrenic or internal thoracic veins from the anterior portions of intercostal spaces. Synonym: venae intercostales anteriores. (05 Mar 2000) |
| right superior intercostal vein | <anatomy, vein> A tributary of the azygos vein formed by the union of the right second, third, and fourth posterior intercostal veins. Synonym: vena intercostalis superior dextra. (05 Mar 2000) |
| posterior intercostal arteries | Terminal branches of the superior intercostal artery (from costocervical trunk) supplying upper two intercostal spaces (1-2). Posterior intercostal arteries 3-11, one of nine pairs of arteries arising from the thoracic aorta and distributed to the nine lower intercostal spaces, vertebral column, spinal cord, and muscles and integument of the back; they anastomose with branches of the musculophrenic, internal thoracic, superior epigastric, subcostal and lumbar. Synonym: arteriae intercostales posteriores. (05 Mar 2000) |
| posterior intercostal veins | Veins draining the intercostal spaces posteriorly; those of the first 1-C space drain into the brachiocephalic veins; from spaces 2-3 they drain into right and left superior intercostal veins; from the fourth to the eleventh spaces on the right they are tributaries of the azygos vein; on the left they empty into either the hemiazygos or accessory hemiazygos veins. Synonym: venae intercostales posteriores. (05 Mar 2000) |
| highest intercostal artery | <anatomy, artery> Origin, costocervical trunk; distribution, structures of first and second intercostal spaces via its terminal branches, posterior intercostal arteries 1 and 2; anastomoses, anterior intercostal branches of internal thoracic. Synonym: arteria intercostalis suprema, highest intercostal artery, supreme intercostal artery. (05 Mar 2000) |
| highest intercostal vein | <anatomy, vein> The vein draining the first intercostal space into either the vertebral or the brachiocephalic vein. Synonym: vena intercostalis suprema, supreme intercostal vein. (05 Mar 2000) |
| superior intercostal artery | <anatomy, artery> Origin, costocervical trunk; distribution, structures of first and second intercostal spaces via its terminal branches, posterior intercostal arteries 1 and 2; anastomoses, anterior intercostal branches of internal thoracic. Synonym: arteria intercostalis suprema, highest intercostal artery, supreme intercostal artery. (05 Mar 2000) |
| superior intercostal vein | <anatomy, vein> See: left superior intercostal vein, right superior intercostal vein. (05 Mar 2000) |
| supreme intercostal artery | <anatomy, artery> Origin, costocervical trunk; distribution, structures of first and second intercostal spaces via its terminal branches, posterior intercostal arteries 1 and 2; anastomoses, anterior intercostal branches of internal thoracic. Synonym: arteria intercostalis suprema, highest intercostal artery, supreme intercostal artery. (05 Mar 2000) |