b'\n_START_ARTICLE_\nMu\xc8\x99chii lombricali ai m\xc3\xa2inii\n_START_PARAGRAPH_\nMu\xc8\x99chii lombricali ai m\xc3\xa2inii (plural Musculi lumbricales manus, singular Musculus lumbricalis manus) sunt patru mu\xc8\x99chi mici, fusiformi \xc8\x99i alungi\xc8\x9bi a\xc8\x99eza\xc8\x9bi pe fa\xc8\x9ba palmar\xc4\x83 a m\xc3\xa2inii \xc8\x99i anexa\xc8\x9bi tendoanelor mu\xc8\x99chiului flexor profund al degetelor (Musculus flexor digitorum profundus) \xc8\x99i situa\xc8\x9bi pe acela\xc8\x99i plan cu ele. Se numeroteaz\xc4\x83 de la police spre degetul mic, primind denumirea de primul, al doilea, al treilea \xc8\x99i al patrulea lombrical.\n_START_SECTION_\nRaporturi\n_START_PARAGRAPH_\nSunt acoperi\xc8\x9bi de tendoanele mu\xc8\x99chiului flexor superficial al degetelor (Musculus flexor digitorum superficialis), arcada palmar\xc4\x83 superficial\xc4\x83 (Arcus palmaris superficialis) \xc8\x99i ramurile nervilor ulnar \xc8\x99i median._NEWLINE_Primii doi mu\xc8\x99chi lombricali acoper\xc4\x83 mu\xc8\x99chiul adductor al policelui (Musculus adductor pollicis), iar ceilal\xc8\x9bi mu\xc8\x99chi lombricali acoper\xc4\x83 spa\xc8\x9biile interosoase \xc8\x99i mu\xc8\x99chii interoso\xc8\x99i.\n_START_SECTION_\nAc\xc8\x9biune\n_START_PARAGRAPH_\nSunt flexori ai falangei proximale \xc8\x99i extensori (slabi) ai falangelor medii \xc8\x99i distale ale degetelor II\xe2\x80\x93V. Aceast\xc4\x83 ac\xc8\x9biune complex\xc4\x83 se datore\xc8\x99te faptului c\xc4\x83, \xc3\xaen momentul contrac\xc8\x9biei, lombricalii flecteaz\xc4\x83 falanga proximal\xc4\x83. Dar prin flectarea falangei proximale se \xc3\xaentinde aponevroza dorsal\xc4\x83 a degetelor care se insereaz\xc4\x83 cu v\xc3\xa2rful s\xc4\x83u pe ultima falang\xc4\x83 \xc8\x99i astfel extind ultimele dou\xc4\x83 falange.\n_START_SECTION_\nInerva\xc8\x9bie\n_START_PARAGRAPH_\nPrimul \xc8\x99i al doilea mu\xc8\x99chi lombrical sunt inerva\xc8\x9bi de nervul median (neuromer CVIII-Th\xe2\x82\x81). Al treilea \xc8\x99i al patrulea mu\xc8\x99chi lombrical sunt inerva\xc8\x9bi ramura profund\xc4\x83 a nervului ulnar (Ramus profundus nervi ulnaris) (neuromer CVIII-Th\xe2\x82\x81).\n_START_SECTION_\nVasculariza\xc8\x9bia\n_START_PARAGRAPH_\nVasculariza\xc8\x9bia este asigurat\xc4\x83 de arcul palmar superficial (Arcus palmaris superficialis), arcul palmar profund (Arcus palmaris profundus), arterele digitale dorsale (Arteria digitalis dorsalis), arterele metacarpiene dorsale (Arteria metacarpalis dorsalis) \xc8\x99i arterele digitale palmare comune (Arteria digitalis palmaris communis).'