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CENTRAL NERVOUS SYSTEM

DIVISI AFEREN. CENTRAL NERVOUS SYSTEM. dr. mona amelia , mbiomed. Definisi. Sistem penerimaan impuls melalui Reseptor Akson Ganglion sensorik Cornu posterior Tractus spinothalamicus Corona radiata - Cortex cerebri , gyrus post centralis Persepsi. KASUS KHUSUS.

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CENTRAL NERVOUS SYSTEM

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  1. DIVISI AFEREN CENTRAL NERVOUS SYSTEM dr. monaamelia, mbiomed

  2. Definisi • Sistempenerimaanimpulsmelalui • Reseptor • Akson • Ganglion sensorik • Cornu posterior • Tractusspinothalamicus • Corona radiata - Cortex cerebri, gyrus post centralis • Persepsi

  3. KASUS KHUSUS • Beberapa organ sensorik  diferensiasi tingkat tinggi • ORGANON SENSES • Reseptor khusus (retina, utriculus, sacculus, vibrissae, tastebud, dst) • Ganglion  nucleus khusus intra cranial

  4. InervasiSensorikPerifer • Reseptor • Akson (serabut saraf perifer) • Ganglion sensorik • Neuron ordo 1

  5. InervasiSensorikSentral • Cornu posterior medulla spinalis (substansia grisea) • Tractus spinothalamicus (substansia alba) • Neuron ordo 2 • Thalamus • Corona radiata (substansia alba) • Cortex cerebri (substansia grisea) • Neuron ordo 3

  6. JARAS SENSORIK INFORMASI SENSORIK SADAR INFORMASI SENSORIKtak SADAR

  7. TIGA SISTEM SENSORIK SADAR • Lemniscus medialis – collumna dorsalis • Tractus anterolateral • Tractus trigeminal

  8. Lemniscusmedialis – collumnadorsalis • Fasciculus gracilis • Fasciculus cuneatus • diskriminasi raba, posisi sendi, getar/ vibrasi

  9. TractusAnterolateral • Tractus spinothalamicus anterior • Tractus spinothalamicus lateral • diferensiasi rasa raba, nyeri, suhu

  10. Tractus Trigeminal • Selain sensorik juga ada jaras motorik (tractus ascendens dan descendens sekaligus) • Hanya untuk daerah kepala • Sensorik yang diwakilinya adalah raba, suhu, dan nyeri • Getar, posisi, raba kasar  lemniscus medialis

  11. INFORMASI SENSORIK SADAR

  12. TIGA SISTEM SENSORIK TIDAK SADAR • Tidakmelalui thalamus • Informasiascendens/ afereninimenuntutresponsdescendens/ eferensegera • Sebagiankecilinformasitetapmasukkejalursadar lebih lama • Responlebihcepatdarikesadaran • JANGAN LUPA • Tractusascendensdandescendensadalahkontinuitas!!!

  13. INFORMASI SENSORIK TAK SADAR

  14. FORMATIO RETICULARIS • Pusat jaga, kesadaran, dan waspada • Pusat respirasi dan kardiovaskuler  MO • Pusat motorik terpadu (tractus cortico-reticulo-spinal)  pons • Sistem proyeksi ascendens (ARAS, Ascending Reticulare Activating System)  kewaspadaan • hubungan batang otak dengan cerebellum, keseimbangan

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