has muscle origin has muscle origin has muscle insertion has muscle insertion Homo sapiens proximal phalanx of manual digit 5 ectepicondyle of humerus extensor digiti minimi muscle http://upload.wikimedia.org/wikipedia/commons/1/15/Gray424.png extensor digiti quinti proprius Wikipedia:Extensor_digiti_minimi_muscle UBERON:0007614 SCTID:361819009 FMA:38503 musculus extensor digiti minimi extensor digiti minimi The extensor minimi digiti (extensor digiti quinti proprius) is a slender muscle of the forearm, placed on the ulnar side of the Extensor digitorum communis, with which it is generally connected. It arises from the common Extensor tendon by a thin tendinous slip, from the intermuscular septa between it and the adjacent muscles. Its tendon runs through a compartment of the dorsal carpal ligament behind the distal radio-ulnar joint, then divides into two as it crosses the manus, and finally joins the expansion of the Extensor digitorum communis tendon on the dorsum of the first phalanx of the little finger[WP]. The tendon of insertion is sometimes divided and gives a slip to the fourth digit. An ulnar slip has been observed to end on the base of the fifth metacarpal, thus exactly reproducing the arrangement of the serially homologous slip known as peroneus tertius in the leg. The muscle may be absent in rare cases, but fusion with extensor digitorum is frequent, in which case the tendon comes from the common extensor. extensor digiti minimi (hand) extrinsic extensor muscle of manus