Download - Ppt Referat Winda Reflusia
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TRAKTUS KORTIKOSPINALISDisusun oleh:
Winda Reflusia 0908120323
Pembimbing:dr. Riki Sukiandra, Sp.S
Referat Kecil
Bagian Ilmu Penyakit SarafFakultas Kedokteran Universitas RiauRumah Sakit Umum Daerah Arifin Achmad Pekanbaru2014
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Pendahuluan
area motorik korteks serebri (gambar 1), • primary motor area (area 4) 2/3 •supplementary motor area (medial area 6), dan •premotor area (lateral area 6), •somatosensory cortex (area 3,2,1) dan posterior parietal cortex (area 5 dan 7)
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Homunkulus motorik
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Traktus Kortikospinal
bagian servikal 50%
Bagian torakal 20%
Lumbosakral 30%
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Potongan horizontal otak setinggi kapsula interna
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Hampir lebih dari 90% serabut kortikospinalis sebenarnya tidak langsung bersinaps dengan motoneuron
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Sindrom spesifik berdasarkan lokasi lesi
a. Lesi kortikal
b. Lesi kapsula interna
c. hemiplegia alternans nervus okulomotorius, sindrom Benedikt. (n.ruber)
d. Hemiplegia alternan n. VI. sindrom Millard Gubler, sindrom Foville, Foville-Milard-Gubler.
e. Sindrom medulare medial
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hemiplegia alternans nervus okulomotorius kiri
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hemiplegia alternans n. VI
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Sindrom medular medial
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Sindrom spesifik berdasarkan lokasi lesi
f ,g.Ipsilateral Pada tingkat lesi terjadi kelumpuhan LMN dan di bawah tingkat lesi terdapat kelumpuhan UMN
h. Lesi radiks anteriorKelumpuhan ipsilateral, flaksid, akibat kerusakan perifer atau lower motor neuron.
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TERIMA KASIH