, Pectoralis major
Oorsprong:
→ pars clavicularis: mediale ⅔ voorzijde clavicula
→ pars sternocostalis: manubrium, ribkraakbeen 2-5
→ pars abdominalis: oppervlakkig blad abdominale
rectusschede
Insertie:
crista tuberculi majoris bovenaan (brede pees)
Functie:
→ schouder:
losse arm: endorotatie, anteversie, adductie
gefixeerde arm: heft ribben (inademing), doet
arm dalen met kracht
Pectoralis minor
Oorsprong:
vooruiteinde rib 2-5
Insertie:
processus coracoideus scapulae
Functie:
→ scapula: naar voor, heffen van ribben (bij
gefixeerde scapula)
Rhomboideus major & minor
Oorsprong:
onderste deel lig nuchae, processus spinosi C6-C7
(minor) Th1-Th5 (major), tussenliggende lig.
interspinalia
Insertie:
margo medialis (minor ter hoogte van spina scapula,
major onder spina scapula)
Functie:
→ trekt scapula naar mediaal & craniaal
Levator scapulea
Oorsprong:
tuberculum dorsale van processus transversii
(C1-C4)
Insertie:
angulus superior scapulae en margo medialis tot aan
trigonum spinae
Functie:
elevatie scapula, draait scapula zodat pan naar
caudaal kijkt samen met trapezius pars ascendens,
dorsiflexie wervelzuil (bij gefixeerde schouders)
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