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Samenvatting HS4 bloedsomloop fysio

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Samenvatting van 20 pagina's voor het vak fysiologie aan de HoGent (slides samengevat)

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Uploaded on
April 15, 2021
Number of pages
20
Written in
2020/2021
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Hoofdstuk 4 fysiologie : Bloedsomloop



1. Inleiding
 Aantal belangrijke functies in het lichaam
‐ Transport
 Homeostase handhaven
 3 onderdelen

‐ Pomp = het hart

‐ Systeem van kanalen en buizen = bloedvaten

‐ Vloeibaar medium = bloed

2. Bouw van het circulatie apparaat
2.1 Het hart
 Anatomie
‐ Voorzijde romp
‐ Tussen beide longen
‐ Achter borstbeen
‐ Links gericht
‐ Gebalde vuist
 Spieren
‐ 2 holle spieren
o Atrium (boezem of voorkamer)
o Ventrikel (kamer)
‐ Links en rechts gescheiden
o Septum (tussenschot) => spierweefsel
‐ Instroomopening - atria
‐ Uitstroomvat - ventrikels
 Compartimenten
‐ 4 afdelingen
o 2 atria
 Boezem &
Voorkamer
o 2 ventrikels
 Kamers
 Opgelet: gespiegelde weergave
bij tekeningen.

, De wand bevat 3 duidelijk herkenbare lagen:

‐ Epicardium

o Buitenste oppervlak van het hart

o 1 laag platte cellen

o Gesteund door bindweefsel

‐ Myocardium

o Gespierde wand met hartspierweefsel, bloedvaten en zenuwen

‐ Endocardium

o Binnenbekleding

o 1 dunne laag endotheelcellen

o Gesteund door bindweefsel




 Hartkleppen

‐ Atria  ventrikels via atrioventriculaire klep

‐ Ventrikels  Longen of weefsels via halfmaanvormige kleppen

‐ Terugkeer verhinderen

‐ Atrioventriculaire kleppen

o Passief
o Drukverschil tussen boezem en kamer

, ‐ Semi-lunaire of halfmaanvormige kleppen

o Passief

o Drukverschil tussen kamer en aorta of longslagader




 RV
‐ longslagaders of arteria pulmonalis
 (1) long R
 (1) long L
 LV
‐ lichaamsslagader of aorta
 RA
‐ vena cava superior <- hoofd en armen
‐ vena cava inferior <- romp en benen
‐ sinus coronarius <- hartspieren
 LA
‐ (4) pulmonaalvenen
 (2) long R
 (2) long L
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