Summary
Samenvatting thema 2 hersenen en aansturing
- Course
- Institution
Dit document is een samenvatting van alle colleges, werkgroepen en e-learnings van het tweede thema van het blok hersenen en aansturing.
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↑e MDTORNEURON~genereren Motor:precentrale gerus
vished:rond sulce calcarinu
↑
spraak:interior frontal
corticobulbospinaal systeem (alle)
↳
(Bra
->
gyru Sensory:p ostcentrale gyrm
I tractus:axonen hand
3
.
ontspringt uitprimaire motor cortex & premator cortex
onsaan
isaion"ineenreg ~
secundair:omringd
primary sensory cortices
audities:superior temporal
Cortex gyrus
spraak superior (wernickel begripen
temporalgyrn
nescortex:6 lagen
↳meeste van cerebrum cyrue singull
·
4 motor nomuncular
Elke laag functie
allscortex:6 lagen
·Hippocampus
·cingulate a parahippocampale gyri Primaire motorcortex:
Insula
55van laagpyramidaaneenBez
·
.
Insula
cells
alle axonen die afdalen naar
'lagere' levels
Premotor cortex: .
Striatum
. 40% van laag V
pyramidale neuronen ·Diencephalon
·
Brainstem
mesencephalon
·
o
corticofugaal systeem:o ntspringsaan hele schors, alle laag 5
pyramidale neuronen
.
metencephalon
corona radiata a capsula interna -- Peduncula cerebri
myelencephalon
-
sibrae pontis tracem
-> -
pyramidalis ·medulla spinalis
-b corticobulbospinale projectie:subset corticofugaal systeem (motorcortice)
Gyrm parahippocampalis -> Pyramide tractus is corticospinale projectie
·
corticobulbair:1 motorneuronen - CDG hersenstam/22 mn is
Dopaminereceptoren:nucleuaccumber ·corticospinaal:de motorneuronen CPG/2 mn spine
->
te -
-bulbospindal-ook naar nucleus ruber, rectum, pons, reticulair
foramen, vestibulaire nuclei
lamina quadrigemina
Tectum
·
tmesencepnal
nou
mcauolaonblousnospinal
Gianieramicamanevronsoletelecosneltes
->
cerebellum
kern ~
axon en
·Enige eerste motor neuronen die rechtstreeks
op 22 motor neuronen projecteren
merg voortzetting
-anderenOpinterneuronenonderdrukken Is er een
cortico fugaal
·Pes
in
Kruising 9.188 ViaPonssebe en
ze motor neuronen aan contralaterale
alletemotorneuroneneindigen op
zijeen
3
.
alle 22 motorneuronen innerveren ipsilateraal Kruising
.
van pyramidebaan -
byovergang medulla oblongata to spinalis
goedeeerstintraineremotieom
Bilateraal: -onvolledig,
.
Trigeminal motor nuclems (Vm) -
mastication
. Dorsal facialis motor nucleus (VIId) -
mimical musculature upper halfface
Terminatic pyramidebaan:ongekruld:terminatie
·
ambiguus nucleus (IX.X). swallowing
contralateraal: 55heraaneen Bilaterde aire grijs
mediale motor neuronen (5%). alleen van Betz cellen
. ventral facial motor nuclem (VIIv) -
mimical musculature lowerhalfface
(XII). motor
Gekruisd:terminatie
·Hypoglossal nuclem tongue
contralateraal spi
Lateraal intermediaire grensee
been:
wnomotoreei""Yrâinstem (Ps)
.
-Van premator cortex, nietnaar motor neuronen, maar
·Niewenbeneruberenaeenrac
. intermediate grey -o motor neurons
Subcorticale
circuits: striatum
Secundaire systemen: en cerebellum
Rubrospinale tractus
Reticulospinale tracti
Medullaire spinale tracti
Pontine of mediaal reticulospinale tractus
Vestibulospinale tractus
Tectospinale tractus
Rubrospinale baan:
D
Nucleus ruber receives major input from both cerebellum and
cerebral cortex
important role in motor learning Vestibulospinale tractus:
- Rubrospinale tractus projects mainly to cervical 8)
Informatie over hoofd postieveranderingen
intumesence flexor motorneuronpools tot nek en trunk voor behoud van
Responsible for recovery after cortical lesions
⑤
equilibrium en voor coördinatie van oog en
nek bewegingen
Reticulospinale tractus:
Controle van generale excitabiliteit van motorneuronpools (loss
③.
• Vestibulocollic reflex: stabiliseert hoofd
of tone in sleep) door nekbewegingen door vestibulaire
Controle van tonus van spieren in relatie tot stase signalen
· Regulatie van posturale reflexen • Vestibulospinale reflex: stabiliseert
Reciprocal connections with cerebellum lichaam door postuurbewegingen door
5)
Mediaal tractus: drives excitatory interneurons in cord vestibulaire signalen
Reflexes more lively
B.
Laterale tractus: drives inhibitory interneurons in cord
Reflexes less lively Tectospinale systeem
• laterale baan veel meer gestimuleerd door motorcortex
-B
⑧
Visuele informatie aan nek en trunk:
dan mediale baan - verlies van stimulatie zorgt voor coordinatie van oog en nek bewegingen
minder inhibitie en reflexen worden levendiger
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