Basiswetenschappen 2
Neuro-anatomie, -fysiologie, -pathologie, geriatrie en psychiatrie
2021-2022
,Inhoud
1 HET ZENUWSTELSEL ONTVANGT, INTEGREERT EN BEANTWOORDT INFORMATIE .......................................................... 15
1.1 DE ANATOMISCHE OPDELING VAN HET ZENUWSTELSEL ..................................................................................................... 16
1.2 HET PERIFEER ZENUWSTELSEL KUNNEN WE VERDER OPDELEN IN EEN SOMATISCH EN EEN AUTONOOM
ZENUWSTELSEL. ............................................................................................................................................................................................... 16
1.3 DE NEUROLOGISCHE REACTIE ...................................................................................................................................................... 17
ALGEMENE BOUW VAN EEN NEURON ..................................................................................................................................................... 18
ACTIEPOTENTIALEN REIZEN LANGS HET AXON ....................................................................................................................................... 19
NEURONEN STAAN VIA SYNAPSEN MET ELKAAR IN CONTACT ................................................................................................................. 19
ER BESTAAN 3 TYPES NEURONEN, MET TELKENS EEN VERSCHILLENDE FUNCTIE .................................................................................. 20
REGENERATIE VAN NEURONEN ............................................................................................................................................................. 22
NEUROGLIA IN HET CZS ....................................................................................................................................................................... 23
NEUROGLIA IN HET PZS = CELLEN VAN SCHWANN ............................................................................................................................... 24
2.4 GRIJZE EN WITTE STOF .................................................................................................................................................................... 25
3 PRIKKELGELEIDING EN PRIKKELOVERDRACHT ........................................................................................................................... 28
3.1 PRIKKELGELEIDING BINNEN EEN NEURON................................................................................................................................ 28
DE CELMEMBRAAN ................................................................................................................................................................................ 29
3.2 DE SYNAPS: DE PLAATS VOOR PRIKKELOVERDRACHT VAN NEURON NAAR EEN VOLGENDE CEL ...................... 32
BOUW VAN EEN SYNAPS ........................................................................................................................................................................ 32
ENKELE BEGRIPPEN .............................................................................................................................................................................. 33
VERLOOP VAN PRIKKELOVERDRACHT TER HOOGTE VAN SYNAPS .......................................................................................................... 33
HET TYPE NEUROTRANSMITTER BEPAALT HET EFFECT IN DE POSTSYNAPTISCHE CEL . .......................................................................... 34
4.2 DE VENTRIKELS ................................................................................................................................................................................... 36
4.3 CEREBRUM OF GROTE HERSENEN ............................................................................................................................................... 37
4.3.1.1 De hersenkwabben .................................................................................................................................................................. 39
4.3.1.2 Algemene functies van de cerebrale cortex ......................................................................................................................... 40
HET LIMBISCH SYSTEEM ........................................................................................................................................................................ 49
4.6 KLEINE HERSENEN ............................................................................................................................................................................. 53
4.7 DE MENINGES....................................................................................................................................................................................... 53
DURA MATER ........................................................................................................................................................................................ 54
ARACHNOÏD MATER ............................................................................................................................................................................... 55
PIA MATER ............................................................................................................................................................................................ 55
4.8 HET CEREBROSPINAAL VOCHT ..................................................................................................................................................... 56
4.9 HET RUGGENMERG ............................................................................................................................................................................ 57
5.2 DE SPINALE ZENUWEN...................................................................................................................................................................... 61
5.3 DE HERSENZENUWEN (BELANGRIJK VOOR EXAMEN) ........................................................................................................... 62
NERVUS OLFACTORIUS (N. I) ................................................................................................................................................................ 64
NERVUS OPTICUS (N. II) ....................................................................................................................................................................... 64
NERVUS OCULOMOTORIUS (N. III) ........................................................................................................................................................ 65
NERVUS TROCHLEARIS (N. IV) ............................................................................................................................................................. 65
NERVUS TRIGEMINUS (N. V) ................................................................................................................................................................. 65
NERVUS ABDUCENS (N. VI) .................................................................................................................................................................. 66
NERVUS FACIALIS (N. VII) .................................................................................................................................................................... 67
NERVUS VESTIBULOCOCHLEARIS (N. VIII) ............................................................................................................................................ 68
NERVUS GLOSSOPHARYNGEUS (N. IX)................................................................................................................................................. 71
NERVUS VAGUS (N. X) ..................................................................................................................................................................... 72
NERVUS ACCESSORIUS (N. XI) ........................................................................................................................................................ 73
NERVUS HYPOGLOSSUS (N. XII) ...................................................................................................................................................... 74
5.4.1.1 Het perifere deel van de radix vestibularis ........................................................................................................................... 76
5.4.1.2 Binnenkomen van de radix vestibularis in de hersenstam ................................................................................................. 77
5.4.1.4 Samenwerking van oogspieren, halsspieren en evenwichtsorgaan ................................................................................. 78
, BESTAAT UIT 2 GROTE SUBEENHEDEN: ................................................................................................................................................. 82
7.1 NAH .......................................................................................................................................................................................................... 83
ERNST VAN LETSEL ............................................................................................................................................................................... 86
7.2.4.1 GCS (= glascow coma scale) ................................................................................................................................................. 86
7.2.4.2 Duur van de coma of bewustzijnsdaling ............................................................................................................................... 87
, FYSIOLOGIE VAN DE HERSENENDOORBLOEDING ................................................................................................................................... 96
7.3.5.3 Gevolgen en stoornissen op lichamelijk vlak ....................................................................................................................... 99
a. Splitsing van het lichaam .................................................................................................................................................................. 99
b. Asymmetrie......................................................................................................................................................................................... 99
c. Pushen .............................................................................................................................................................................................. 100
d. Hemianopsie .................................................................................................................................................................................... 100
e. Incontinentie en obstipatie (= constipatie).................................................................................................................................... 100
f. Stoornissen in denken, emoties en gedrag ................................................................................................................................. 100
7.3.5.5 Behandeling in ziekenhuis (Ischemische CVA) ................................................................................................................. 102
a. Fase 1: de hyperacute fase............................................................................................................................................................ 102
b. Fase 2: de acute fase ..................................................................................................................................................................... 102
c. Fase 3: de herstelfase .................................................................................................................................................................... 103
d. Fase 4: de revalidatiefase .............................................................................................................................................................. 103
GEGENERALISEERD BEGIN .................................................................................................................................................................. 105
FOCALE BEGIN .................................................................................................................................................................................... 105
HET EXTRAPIRAMIDAAL SYSTEEM (EPS) ............................................................................................................................................ 105
DE ZIEKTE VAN PARKINSON ................................................................................................................................................................ 106
a. Medicamenteus................................................................................................................................................................................ 109
b. Chirurgie: deep brain stimulation (= DBS) ................................................................................................................................... 111
DE MYELINE-SCHEDE: EVEN OPFRISSEN ............................................................................................................................................. 112
VERLOOP ............................................................................................................................................................................................ 114
7.6.6.3 Motorische stoornissen van de piramidale baan ............................................................................................................... 116
7.6.6.4 Cerebellaire symptomen en hersenstam symptomen ...................................................................................................... 117
7.6.6.8 Andere ..................................................................................................................................................................................... 118
7.7 INFECTIES VAN HET ZENUWSTELSEL ........................................................................................................................................ 120
VERSCHILLENDE TYPES ...................................................................................................................................................................... 122
LANGER LEVEN OF BETER LEVEN? ...................................................................................................................................................... 133
3 ALGEMENE VEROUDERING VAN DE VERSCHILLENDE STELSELS ........................................................................................ 133
3.1 HET CARDIOVASCULAIRE STELSEL ........................................................................................................................................... 134
DE BLOEDVATEN ................................................................................................................................................................................. 134
3.2 HET PULMONAAL STELSEL ........................................................................................................................................................... 136
3.3 HET ZENUWSTELSEL ....................................................................................................................................................................... 136
OUDERDOMSZIEKTEN VAN HET ZENUWSTELSEL (ZIE TERUG) .............................................................................................................. 136
HET PERIFERE ZENUWSTELSEL ........................................................................................................................................................... 136
3.4 DE ZINTUIGEN .................................................................................................................................................................................... 137
OOR .................................................................................................................................................................................................... 138
7
,3.5 HET IMMUNOLOGISCH STELSEL .................................................................................................................................................. 140
3.6 HET UROGENITALE STELSEL ........................................................................................................................................................ 140
DE NIEREN .......................................................................................................................................................................................... 140
DE URINEWEGEN................................................................................................................................................................................. 140
3.7 HET LOCOMOTORISCHE STELSEL .............................................................................................................................................. 141
HET SKELET ........................................................................................................................................................................................ 141
DE SPIEREN ........................................................................................................................................................................................ 142
4 PROFIEL VAN DE GERIATRISCHE PATIËNT ................................................................................................................................... 143
CASUS 1: MIA ..................................................................................................................................................................................... 143
CASUS 2: ROBERT .............................................................................................................................................................................. 143
4.2 KENMERKEN VAN DE GERIATRISCHE PATIËNT ...................................................................................................................... 144
GEWIJZIGDE PRESENTATIE EN VERLOOP VAN PATHOLOGIE ................................................................................................................. 145
BEHANDELING EN MULTIDISCIPLINAIRE AANPAK .................................................................................................................................. 147
4.3 BEOORDELING VAN DE FUNCTIONELE CAPACITEIT BIJ OUDEREN ................................................................................. 147
BARTHEL INDEX .................................................................................................................................................................................. 148
LAWTON EN BRODY IADL-TESTS ....................................................................................................................................................... 149
5 VOORZIENINGEN VOOR OUDEREN IN BELGIË.............................................................................................................................. 152
5.1 VOORZIENINGEN VOOR OUDEREN THUIS ................................................................................................................................. 152
, GEZINS- EN BEJAARDENHULP ............................................................................................................................................................. 154
5.1.3.1 Wie krijgt hulp? ....................................................................................................................................................................... 154
5.1.3.2 Hoe wordt die hulp georganiseerd? .................................................................................................................................... 154
EXTRA DIENSTEN ................................................................................................................................................................................ 154
ZORGWONEN OF KANGOEROEWONEN ................................................................................................................................................. 155
ERGOBEGELEIDING EN WOONADVIES ................................................................................................................................................. 155
5.2 HET ZIEKENHUIS: DE G-DIENST.................................................................................................................................................... 155
RUST- EN VERZORGINGSTEHUIZEN ..................................................................................................................................................... 158
CENTRUM VOOR KORTVERBLIJF .......................................................................................................................................................... 159
CENTRUM VOOR HERSTELVERBLIJF .................................................................................................................................................... 160
EPIDEMIOLOGIE EN ETIOLOGIE ............................................................................................................................................................ 161
PREVALENTIE VAN FIXEREN IN GENT .................................................................................................................................................. 161
FYSIOLOGIE VAN BEDRUST .................................................................................................................................................................. 162
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