Histology Flashcards
role of goblet cells
- secrete granules of mucinogen droplets onto epithelial surface to trap inhaled particles
how would you know you were in the adventitia
- you would see a lot of hyaline cartilage
how would you know you were in the submucosa
- see glands and vessels
composition of mucosa layer
- epithlium and lamina propria
epithelium in the trachea
- psuedostratified ciliated columnar
does the trachea have ciliated cells
yes
does the trachea have goblet cells
- yes
if you see cartilage, what kind of structure is it
- bronchus
if you don’t see cartilage, what kind of structure is it
- bronchiole
epithelial of bronchi
- pseudostratified ciliated epithelium
do bronchi have goblet cells?
- yes
does the trachea have smooth muscle?
- yes, the trachaelis muscle
how can you tell where a bronchus transitions to a primary bronchiole
- look for the point where there is no cartilage
what is this
how do you know?
respiratory bronchiole
tract of noncilated club cells and gas exchange epithelium
what is this?
- true bronchiole
what is this?
- terminal bronchiole
epithelium in terminal bronchiole
- simple cilated columnar changing to simple cuboidal
role of Clara cells
- divide, secrete GAGs, metabolize airborne toxins
what is this
respiratory bronchiole
epithelium of respiratory bronchiole
- simple cuboidal
nucleus of type I pneumocyte
- cigar-shaped
how can you tell the type II pneumocytes
- look for bubbly surfactant
- look where 3 alveoli come together
how can you tell a capillary
- look for an open hole with a blood cell in it
- nucleus pushed off to one side
what are the cell located at the basement membrane or near the lamina propria
- basal/short cells
smooth muscle
both of these
serous glands secrete enzymes
mucous glands secrete mucous
pseudostratified
they are goblet cells
they secrete mucinogen droplets
microtubules
both of these
in psuedostratified epithelium, all ciliated columnar cells, goblet cells, brush cells, basal cells rest on the basement membrane
conduction of air
artery/vein adjacent to a bronchus
secondary or tertiary bronchus
clara cells
- terminal bronchiole
- respiratory bronchiole
alveolar duct
2
equalization of pressure between alveoli
division and regeneration of pneumocytes
it is a type II pneumocyte
continuous
95%
lamellar bodies
microvilli
alveolar macrophage
which region is an alveolar duct?
- C
how can you tell what an alveolar duct looks like
what is at the end of an alveolar duct
long passages containg knobs in histological sections
alveolar sac
