telencephalon -...
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TELENCEPHALON
0LEH : Dr. FITRIANI. L
www2.sunysuffolk.edu/.../Anatomical%20terms%20and%20Organization.doc
COMMON BRAIN DIVISION
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TELENCEPHALON (OTAK BESAR)
Serebrum
Pd bgn sagital : - corpus callosum
- septum pellucidum
- forniks
Pd bgn basal : - lobus temporal
- lobus frontal
- oksipital
SEREBRUM
Permukaan serebrum :
luar korteks serebri ( subs.grisea)
dalam substansia alba
Pada korteks tampak adanya sulkus dan gyrus
Beberapa sulkus utama pada korteks
merupakan batas lobus pada serebrum
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HEMISFER SEREBRI
Terdiri dari enam lobus yaitu :
1. Lobus frontalis
2. Lobus parietalis
3. Lobus temporalis
4. Lobus occipitalis
5. Lobus sentral ( insula/ Reil island)
6. Lobus limbik
http://www.makehumans.com/htmx/brain.php
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Hemisfer serebri tdd 2 bagian : - kiri
- kanan
yg dipisahkan oleh fissura longitudinalis serebri
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LOBUS FRONTALIS
Merupakan lobus yang besar dan agak berlekuk, ok ada 3
sulkus utama, yaitu :
• Sulkus prasentralis
• Sulkus frontal superior
• Sulcus frontal inferior
Girus prasentralis, mempunyai fungsi
motorik korteks motorik
Di bgn depan girus pramotorik ,
berhubungan dgn aktivitas motorik , pd
daerah ini terdapat area bicara Broca ,
aspek motorik vokalisasi
Lobus prafrontal , berperan dalam ekspresi
yg halus, spt : kecemasan , ketenangan ,
dorongan ambisi, dan perhatian terhadap
sikap sosial
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LOBUS PARIETAL
Terdapat diantara sulcus centralis dan garisparieto-occipitalis
LOBUS TEMPORALIS
Terletak dibawah sulcus lateralis dan rostralterhadap garis parieto-occipitalis
Insula
Terdapat didalam lobus temporalis , yang
berada didalam sulkus lateral
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NEOKORTEKS (= korteks serebri)
Korteks serebrum tanpa korteks limbik
Paul MacLean, the former director of the Laboratory of the Brain
and Behavior at the United StatesNational Institute of Mental
Health, developed a model of the brain based on its
evolutionary development (triune brain theory)
The three layers are the reptilian system, or R-
complex, the limbic system, and the neocortex.
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http://www.americancombat.com/chapter1.html
Pada korteks lobus temporal bagian atas (bgn dlm sulkus lateral serebri)
Girus Lintang Heschl, daerah
reseptif primer untuk p’dengaran
Bgn lain pada lobus temporal , lobus parietal neokorteks merupakan daerah asosiasi
Lobus temporal berhubungan juga dengan memori
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Korteks serebri terbagi dalam area-area yg
menggunakan kriteria anatomi mikroskopis
(sitoarsitektur)
Area bernomor yg ditentukan oleh Brodmann
� Area 4 : girus prasentral / korteks motorik
� Area 6 dan 8 : korteks pramotorik
� Area 17 : reseptif primer utk penglihatan
� Area 41 dan 42 : reseptif primer utk
pendengaran.
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Pd bgn medial hemisfer serebri
Lobus limbik
lingkaran korteks dan struktur2 yg
berhub, mengelilingi inti serebrum
tdd: - archikorteks
- paleokorteks
- mesokorteks
Letak lobus limbik disekitar ventrikel serebri
Lobus limbik tdd :
• Korteks septal ( badan paraterminal dan parolfaktori)
• Girus singulum
• Inducium griseum
• Girus fasciolar
• Girus parahippocampus
• Girus dentatus
• Formasi hippocampus
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Lobus limbik
Corpus amygdala
Hippocampus
Hipothalamus
Jalur olfactori
Hippocampus tdd ; pes hippocampus, alveus, fimbria
Alveus dan fimbria serabut-serabut yg membentuk lamina tipis pada bagian atas dan berlanjut sebagai berkas serabut yg disebut fornix
Sistem limbik
http://www.pep-web.org/document.php?id=psar.079.0405a
LOBUS LIMBIC
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