2017
DOI: 10.21638/11701/spbu03.2017.105
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An unusual elbow muscle in the red howler monkey: does it deserve invention of a new name musculus contrahens cubiti?

Abstract: During dissection of a juvenile specimen of howler monkey (Alouatta seniculus), we discovered a supernumerary muscle. This muscle originates from the lateral epicondyle of the humerus, distal to the m. brahioradialis and beneath the m. extensor carpi radialis longus, and runs deeply to insert on the proximal part of the radius adjacent to the m. supinator.To determine homology of the unusual muscle, we compared it with the known abnormal extra muscles in the group of preaxial forearm extensors in humans and ot… Show more

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“…1 ). Only in Alouatta was there found an eleventh abnormal muscle, which we described as m. contrahens cubiti [Novikova and Kuznetsov, 2017]. We failed to find a separate m. epitrochleoanconeus lateralis (the homologue of reptilian and amphibian m extensor antebrachii ulnaris [Haines, 1939;Gambaryan et al, 2015] m. extensor digiti secundi, and m. extensor digitorum lateralis), which form the extensor digitorum profundus complex, is provided in Table 2 .…”
Section: Resultsmentioning
confidence: 94%
“…1 ). Only in Alouatta was there found an eleventh abnormal muscle, which we described as m. contrahens cubiti [Novikova and Kuznetsov, 2017]. We failed to find a separate m. epitrochleoanconeus lateralis (the homologue of reptilian and amphibian m extensor antebrachii ulnaris [Haines, 1939;Gambaryan et al, 2015] m. extensor digiti secundi, and m. extensor digitorum lateralis), which form the extensor digitorum profundus complex, is provided in Table 2 .…”
Section: Resultsmentioning
confidence: 94%