Ontogeneza plamanului – momente importante. Dezvoltarea laringelui si traheei Flashcards

1
Q

diverticului laringotraheal

A

evaginatie a lumen intestinal
26 sapt si 20 de somite
pe laturi - plici traheoesofagiene

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2
Q

septul traheoesofagian

A

format prin unirea plicilor
separa primordiul ap resp(ant) de esofag(post)

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3
Q

aditus laringian

A

singura com intre cele 2 conducte
la nivel cranial

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4
Q

capat liber diverticul

A

se bifurca => 2 bronhii + arbore bronsic + ep alveolar
! resutl form provin din mezenchim splanhnic

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5
Q

endodermul formeaza ep intern al

A

laringe port supraglotica - perete ventral al faringe primitiv
laringe port infraglotica - diverticul
trahee -diverticul
bronhii - diverticul
ep alveolar - diverticul

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6
Q

mezodermul formeaza

A

musc + cartilaje cai resp / pereti cai resp
vascularizatie intrinseca si stroma conj-vasc a plamanilor

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7
Q

ectodermul formeaza

A

gg nervosi vegetativi si fibre nervoase

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8
Q

endodermul diverticulului laringotraheal va da nastere

A

mucoasei -traheei , laringelui , arbore bronsic + ep alveolar

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9
Q

Mezenchimul arcurilor 4 şi 5

A

dă naştere cartilajelor şi muşchilor intrinseci ai laringelui (mai puţin epiglota)

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10
Q

Mezenchimul splanhnic

A

situat ventral de esofag
dă naştere celorlalte elemente structurale ale traheei şi bronhiilor(cartilaje, musculatură)

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11
Q

etape dezvl plamani

A
  • et pseudo-glandulara (s5-l4)
    -et caudiculara(l4-l6)
    -et saculara/terminala(l6-nastere)
    -et alveolara (7-8ani)
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12
Q

et pseudoglandulara

A

diferentiere bronhii -bronhiole temr
ep arbore bronsic= cubic
mezenchim abundent

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13
Q

et caudiculara

A

dif bronhiole resp , canale alveolare
vascularizatie abundenta
resp devine posibila

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14
Q

et terminala /saculara

A

dif unfundibile si alveole
se form mb alv-capilara
apar celule secretoare de surfactant =celule cubive de tip 2

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15
Q

rol surfactant

A

miscoreaza tensinuea superificala
previne atelectazia
in absenta lui - maladia mb hialine, detresa resp

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16
Q

et alveolara

A

maturizare alveole
inainte de nastere, lichidul amniotic se aspira si se adauga surfactant + secr alveolare

17
Q

anomalii

A

fistule traheo-esofagiene
agenezie pulm uni/bilat
hipoplaiza - loin pulm accesori (mijl stg =lob azygos accesor)
lobi pulm ectopici - nu au leg bronhice si vasc
chisturi pulm
situs invertus

18
Q

cupola pleurala rap

A

sup plex brahial
med - trahee si esofag
lat - m scaleni
ant - artera subclavie + ram(toracica int si vertebrala )
post - gg stelat si lant simpatic cervical