anatomi fisiologi sistem persarafan
TRANSCRIPT
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M. Nuralamsyah, S.Kep.Ns.,M.Kes
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FUNGSI : ADAPTASI
Menerima Stimulus – rekam – reaksi (motoris) dikendalikan – reflex
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Suatu sel saraf di sebut NEURON Satu sel neuron terdiri dari CELL
BODY, DENDRIT dan NEURIT (=AXON) Kumpulan neuron didlm SSP disebut
NUCLEUS & yg berada diluar sel disebut GANGLION
STIMULUS = Ujung saraf yg menerima stimulus
EFFECTOR=Ujung terminal saraf yg berada pada otot dan organ
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Nukleus DNA ; nukleolus RNA Mitokondria memberikan energi Badan golgi menyimpan bahan2
sekresi, mensitesa karbohidrat dan membentuk bahan2 digestif
Retikulum endoplasma sistem transport dlm sel
Badan nissel
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1. Lobus frontal daerah motorik utama meliputi kortek premotor a/asosiasi motorik, daerah brocca, tanggap u/motor bicara & suatu yg berhubugan dgn tingkah laku & penilaian.
2. Lobus parietal sbg korteks sensorik u/menganalisa karakteristik spesifik dr input sensorik, memberikan orientasi spatial, kesadaran thdp bagian2 dr tubuh & analisa hub. Antara bagian2 tubuh
3. Lobus temporal integrasi somatik, auditorik & daerah asosiasi visual
4. Lobus oksipital reseptif visual utama
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Ganglia Basal berhubungan dgn pengontrolan motorik dr pergerakan tubuh yg halus
Kelenjar Pituitary anterior mensekresikan hormon : Growth Hormone, Adrenal Stimulating Hormone (ADH), Thyroid Stimulating Hormone, Prolactin, Follicle Stimulating Hormone & Luteinizing hormone. Posterior mensekresikan hormon : antidiuretic hormone & oxytocin
Serebellum mengkoordinasikan keseimbangan pergerakan aktifitas klp otot, juga mengontrol pergerakan halus
Batang otak otak tengah, pons & medula oblongata
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31 pasang saraf spinal : 8 pasang saraf servikal 12 pasang saraf torakal 5 pasang saraf lumbal 5 pasang saraf sakral 1 pasang saraf koksigeus
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Mengatur & mengkoordinasikan aktifitas vital visceral
Respon2 efferen dr sistem saraf otonom
Struktur & fungsi Simpatis Parasimpatis
Mata :-Iris-Otot silinder
Dilatasi pupilInhibit, lensa datar
Kontriksi pupilMerangsang menonjolnya lensa
Jantung Meningkatkan kecepatan
Menurunkan kecepatan
Pembuluh darah :-Arteri koroner-Otot skeletal-Viseral abdomen & kulit
Dilatasi Dilatasi Konstriksi
KonstriksiTidak ada efekTidak ada efek
Tekanan Darah Meningkat Menurun
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