JaLCDOI 10.18926/AMO/32837
FullText URL fulltext.pdf
Author Murakami, Shinichiro| Horiuchi, Kanji| Yamamoto, Chugo| Ohtsuka, Aiji| Murakami, Takuro|
Abstract <p>A rare anomaly of the scalenus muscles is described. In this case, the right scalenus anterior muscle was absent. As a substitute for this muscle, some aberrant muscle slips arose from the lower vertebrae and descended in front of the ventral rami of the lower cervical nerves. These aberrant slips then ran between the ventral rami of the the eighth cervical and first thoracic nerves, and were fused with the right scalenus medius muscle. Thus, the subclavian artery and vein ran in front of the aberrant slips, together with the ventral ramus of the first thoracic nerve. The aberrant muscle slips issued 2 accessory bundles. One bundle ran between the ventral rami of the fourth and fifth cervical nerves and was fused with the scalenus medius muscle; the other bundle ran between the ventral rami of the fifth and sixth cervical nerves and was fused with the scalenus medius muscle.</p>
Keywords scalenus anterior muscle scalenus medius muscle ventral rami of the lower cervical nerves ventral ramus of the first thoracic nerve subclavian artery and vein
Amo Type Article
Published Date 2003-06
Publication Title Acta Medica Okayama
Volume volume57
Issue issue3
Publisher Okayama University Medical School
Start Page 159
End Page 161
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 12908014
Web of Sience KeyUT 000183816500008
JaLCDOI 10.18926/AMO/31000
FullText URL fulltext.pdf
Author Yamamoto, Chugo| Murakami, Takuro| Ohtsuka, Aiji|
Abstract <p>The deep palmar muscles in monkey hands were studied. The contrahentes muscles mainly arose from the capitate bone, descended palmar to the deep palmar branch of the ulnar nerve and the palmar metacarpophalangeal nerves, and attached to the proximal phalanges or wing tendons of the second, fourth and fifth fingers. In relation to the deep palmar branch of the ulnar nerve and the palmar metacarpophalangeal nerves, the contrahentes muscles are homologous with the adductor pollicis and flexor indicis radialis muscles. The contrahentes muscles occasionally gave off some accessory slips which blended with the interosseous muscles. These findings suggest that the human adductor pollicis muscle is a well-developed remnant of a contrahens muscle, and that the human interosseous muscles contain some remnant of the contrahentes muscle. In fact, a well-developed remnant of a contrahens muscle was found in the fourth finger of a human hand. It is further considered that the human adductor pollicis muscle contains an element of the interosseous muscle of the thumb.</p>
Keywords monkey hands contrahentes muscles adductor pollicis muscle flexor indicis radialis musle interosseous muscles
Amo Type Article
Published Date 1988-08
Publication Title Acta Medica Okayama
Volume volume42
Issue issue4
Publisher Okayama University Medical School
Start Page 215
End Page 226
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
File Version publisher
Refereed True
PubMed ID 3177007
Web of Sience KeyUT A1988P884600005