Summary
College 14 hartsamenvatting leerjaar 1
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- Institution
College 14 hart samenvatting blok 1 jaar 1
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College 14 hartHet hart bestaat uit vier stuwende compartimenten
Rechter atrium (boezem)
- Ontvangt bloed van het lichaam
Rechter ventrikel
- Stuwt bloed naar de longen
Linker atrium
- Ontvangt bloed vanuit de longen
Linker ventrikel
- Stuwt bloed naar orgaanstelsel (grote bloedsomloop)
De hartwand
Epicardium (visceraal pericardium)
- Buitenste laag
- Sereus membraan
Myocardium
- Middelste laag
- Dikke spierlaag (dwarsgespierd)
Endocardium
- Binnenbekleding van stuwende compartimenten
- Gaat over in endotheel
Hartspiercellen
Korter dan skeletspiervezels
Hebben 1 celkern
Hebben strepingen (organisatie sarcomeer)
Afhankelijk van aërobe stofwisseling er is zuurstof nodig om het hart te functioneren
Gestreept spierweefsel
Overige weefsels
Collagene en elastische vezels
- Versteviging van het hart, bloedvaten en zenuwen
- Behouden de vorm van het hart na een contractie : bij relaxatie
De inwendige anatomie van het hart
Intratriaal septum ( spetum is wand )
- Scheiding tussen atria ( Re en Li atrium)
Interventriculair septum
- Scheiding tussen ventrikels ( Re en Li ventrikels)
Atrioventriculaire kleppen ( AV-kleppen)
- Bevinden zich tussen atria en ventrikels
- Zorgen ervoor dat bloed in 1 richting stroomt – van atrium naar het ventrikel
Bloedstroom in het hart
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