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Samenvatting anatomie 2 leerjaar 2 K1/K3

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Samenvatting anatomie 2 leerjaar 2 K1/K3. Literatuur die is samengevat staat onderaan in het document

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,Plexus cervicalis en brachialis
• RM (=ruggenmerg) -> wortel (uit foramen intervertebrale) -> spinale zenuw -> ontwikkeling
plexus (zenuwvezels gaan verweven = plexus) -> perifere zenuw -> verloop naar:
• Innervatiegebieden
− Motorisch: musculatuur
− Sensorisch: huid
• Specifieke anatomische plaatsen
− O.a. mogelijke risicogebieden bij letsel Spinale zenuw




Ramus dorsalis innerveert het ruggebied
Ramus ventralis innerveert de voorkant van het lichaam en de extremteiten
Plexus zijn zenuwvezels uit ramus ventralis

Plexus cervicalis (C1 – C4) Hoogste gedeelte van de plexus
• Sensorisch en motorische innervatie van hoofd-hals regio
• Motorische innervatie van:
− M. sternocleidomastoïdeus
Door plexus en ook door n. accessorius XI (=hersenzenuw)
− M. trapzeius
Door plexus en ook door n. accessorius XI (= hersenzenuw)
− M. levator scapulae
Door plexus en ook door n. dorsalis scapulae
− Mm. Scaleni (C4 – C8)



Plexus brachialis (C5 – Th1)
Traject:
• RM ->
• Nekregio ->
• Tussen de mm. Scaleni ->
• Onder clavicula ->
• Onder m. pectoralis minor ->
• Okselregio ->

,Plexus brachialis




Loopt tussen clavicula en de 1e rib
3 trunci (stammen) gevormd door:
• Superior C5 en C6
• Medius C7 apart
• Inferior C8 en Th1
Na opsplitsen en fusie (divisies) 3 fasciculi gegroepeerd rond de art. axillaris

Plexus brachialis
• Na splitsing in ventrale en dorsale takken groeperen rondom verloop a. axillaris: 3 fasciculi
− Ventrale takken superior en medius samen -> fasciculus lateralis
− Ventrale tak: inferior -> fasciculus medialis
− De dorsale takken samen -> fasciculus posterior

Spinale zenuwen – Rami ant. Fuseren en splitsen in ->
• Trunci
− Superior, medius, inferior
− Divisies
• Fasciculi
− Lateraal, posterior, mediaal
• Perifere zenuwen

Van Fasciculi gaan over naar perifere zenuwen
De grote zenuwen
• Fasciculus lateralis -> musculocutaneous nerve (C5, 6)
− Fasculus lateralis en medialis samen -> nervus medianus (C6, 7, 8, Th1)
• Fasciculus medialis -> nervus ulnaris (C8, Th1)
• Fasciculus posterior -> nervus radialis (C5, 6, 7, 8) en nervus axillaris (C5)

, Perifere zenuwen arm
• N. dorsalis scapulae (hoog in de schouder)
• N. suprascapularis (hoog in de schouder)
• N. thoracicus longus (hoog in de schouder)
• N. musculocutaneus (hoog in de schouder)
• N. axillaris (bovenkant arm)
• N. radialis (distaal naar hand)
• N. ulnaris (distaal naar hand)
• N. medianus (distaal naar hand)
• Nn. Subscapulares (schoudergordel)
• N. thoracdorsalis (schoudergordel)

Nn. Subscapularis (C6, 8)
• Motorisch:
− Bovenste -> innerveert M. subscapularis
− Onderste -> innerveert M. teres major




N. thoracodorsalis (C6, 8)
• Motorisch:
− Innerveert M. latissimus dorsi




N. dorsalis scapulae (C5)
• Motorisch:
− Innerveert M. levator scapulae
− Innerveert Mm. Rhomboidei

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