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Musculus subclavius
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
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Der Musculus subclavius (lat. fΓΌr βUnterschlΓΌsselbeinmuskelβ) entspringt am Brustbein in der HΓΆhe der ersten Rippe und verlΓ€uft an der Unterseite des SchlΓΌsselbeins (Clavicula) in einer Knochenrinne (Sulcus musculi subclavii).
Zum einen stabilisiert er das SchlΓΌsselbein gegen das Brustbein und zum anderen zieht er das SchlΓΌsselbein vor und abwΓ€rts. Er polstert die Arteria und Vena subclavia sowie den Plexus brachialis gegen das SchlΓΌsselbein ab. Die Blutversorgung erfolgt ΓΌber die Arteria thoracica superior.
Contents
β’ Variation
β’ Klinik
β’ Bilder
β’ Literatur
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
Variation
Ansatz am Rabenschnabelfortsatz (Processus coracoideus) anstatt am SchlΓΌsselbein oder sowohl am SchlΓΌsselbein und am Processus coracoideus.
Klinik
Fehlt der Musculus pectoralis minor, so ist der Musculus subclavius durch die erhebliche Belastung stark vergrΓΆΓert (Hypertrophie).
Bilder
Literatur
β’ Werner Penzner (Hrsg.): dtv-Atlas der Anatomie. 4. Auflage. Band 1. dtv, MΓΌnchen 1984, ISBN 3-423-03017-8, S. 144.