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samenvatting les 6 zenuwstelsel

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samenvatting van les 7 zenuwstelsel in revaki

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DE PLEXUS LUMBOSACRALIS


 Plexus lumbosacralis
o Ontstaat uit rami ventrales van spinale zenuwen L1-5 (plexus lumbalis) en S1-5
(plexus sacralis), vormen samen de plexus lumbosacralis




 Overzicht perifere zenuwen
o Plexus lumbalis (L1-5) => ventraal!
 n. iliohypogastricus
 n. ilio-inguinalis
 n. cutaneus femoris lateralis
 n. femoralis
 n. genitofemoralis
 n. obturatorius
o Plexus sacralis (S1-5) => dorsaal!
 n. gluteus superior en inferior
 n. ischiadicus
 n. pudendus
 n. coccygeus
 n. cutaneus femoris posterior (S1-3)

de blauwe lijntjes geven variatie aan.

,  Plexus lumbalis
o n. iliohypogastricus (L1) en n. ilio-inguinalis (L1) => buikspieren + huidregio
 m. transversus abdominis en m. obliquus abdominis internus (zenuwen lopen
tussen beide spieren)
 n. ilio-inguinalis loopt doorheen lieskanaal

o n. genitofemoralis (L1-2)
 r. genitalis loopt in canalis inguinalis => m. cremaster + genitalia
 r. femoralis => huid in trigonum femorale (loopt door lacuna vasorum)

o n. cutaneus femoris lateralis (L2-3) => laterale zijde dijbeen (door lacuna
musculorum)




r. femoralis
r. genitalis




Huid scrotum/labia majora wordt zowel door de n. iliohypogastricus als de n. ilio-inguinalis
bezenuwd

*De n. subcostalis (T12) hoort niet bij de plexus lumbalis

, o MERALGIA PARAESTHETICA (tight jeans syndroom)

Meralgia paraesthetica, ook bekend als het syndroom van Bernhardt-Roth, is een aandoening
waarbij er een doof gevoel en of pijn in de zijkant van het dijbeen bestaat zonder letsel aan het
dijbeen zelf maar door een letsel aan de zenuw van het dijbeen naar de wervelkolom. Deze
chronische neurologische aandoening ontstaat door een aandoening aan een enkele perifere zenuw
namelijk de nervus cutaneus femoris lateralis, de huidzenuw van de buitenkant van het dijbeen .

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