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Samenvatting Blok1.1: HC7 Ademhalingsstelsel

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Samenvatting van 7 pagina's voor het vak 1VRK aan de PXL (Ademhalingsstelsel)

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HC Biomedische wetenschappen
01/10/2024
7. Ademhalingsstelsel
Ademhalingsorganen
 Luchtwegen en longen
o Functie: opname zuurstof, afgifte CO2 en homeostatische regulering
o 2 delen: geleidingscomponent en gasuitwisselingscomponent




Inademen door de neus: door neusholte naar de keel
Inademen door de mond: door mond naar de keel




4 sinussen:
- Lucht circuleert via neusholte
door de sinussen
- Neusademhaling is beter, want
in de sinussen zitten cilia die de
lucht stofvrij maken (zuiveren),
verwarmen en bevochtigen.




Strottenhoofd (larynx)
Achteraan: stembanden
Als er lucht langs de stembanden
komen trillen ze en zo wordt geluid
geproduceerd

, HC Biomedische wetenschappen
01/10/2024
Luchtpijp (trachea)
Kraakbeenringen (trachea moet altijd openstaan)
=> open aan de achterkant, spier kan trachea
dichter trekken (bij astma zien we vernauwing van
luchtwegen)
Trachea vertakt in bronchiën (linker en rechter)




Verdere vertakking naar verschillende lobben
linkerkant: bovenste en onderste lob
rechterkant: bovenste, middelste en onderste lob
Bronchusboom: op uiteinden longblaasjes (alvioli)
(opname en afgifte van zuurtof)
Links: fissura obliqua (schuine fissuur)
rechts : fissura horizontales en fissura obliqua
Langs binnenkant : hilus (longpoort)
=> alle vaten, bronchieën en zenuwen lopen daarlangs binnen
Trachea > primaire bronchus > secundaire bronchus > bronchiolen > bronchiolus >
dustus alviolus (longtrechter) > alvioli (daarrond zit een capillair netwerk)




Surfactants = vloeistof die zorgt dat alvioli open
blijven staan
Pleura (longvliezen)

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