Summary
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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Hoofdstuk 4 fysiologie : Bloedsomloop1. 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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