Lungs Flashcards
respiratory divericulum
becomes trachea as it extends anteriorly and inferiorly in to the chest cavity
What do right and left primary bronchial bunds become
bronchi and bulge into plural spaces
trachesophageal fold
divide gut tube into trachae and esophagus. FUse and become the tracheoesophageal septus.
When does full seperation of trachea and esophagus happen
bronchial bud stages
Splanchic medoderm
overlys bronchial buds
parietal pleura
lines inside of somatic mesoderm. does not leave body wall
visceral pleura
surrounds the lung
Glands of respiratory system and epithelium come from
endoderm
smooth muscle and cartilage comes from
splanic mesoderm
Tracheoesophageal fistula
most common anomaly of lower respitaory tract
tracheoesophageal septum fails to form
baby will die - failure to thrive, pneumonia, and infection
trachealis
closes the c-shaded cartilages of trachea
c-shaped cartilage
allows us to palpate trachea
open posteriorly to allow expansion of esophagus
Where does the trachea bifurcate
at sternal angle near T4-T5
R primary bronchus
more vertically directed, winder and shorter than left. If someone is aspirating, look here first
L primary bronchus
horizontally directed and narrow
Azygous vein
forms an arch over teh right primary ronchus and drains into superior vena cava
aortic arch
goes up and over left primary bronchi
R lung has how many lobes
3
L lung has how many lobes
2
Where is lingula
on the left long
Cervical surface
apex of lungs
costal surface
faces ribs
diaphragmatic surface
at base of lungs
mediastinal surface
faces heart and midline organs
