110514 resp histology Flashcards
where does the lungs start?
after primary bronchus
conducting portion of respiratory system
from nose/mouth all the way to terminal bronchiole
in contrast the respiratory portion, it doesn’t have alveoli
conducting passages of respiratory system
lined by mucosa
wall stabilized by bone, cartilage, or muscle
produce seromucous secretions
mucosa
lining membrane of cavities (lumens of tubular organs) that have a connection to the exterior of the body
components of a mucosa
epithelium
lamina propria
nasal cavity histology
epithelium-ciliated pseudostratified columnar with goblet cells
lamina propria-seromucous glands, venous plexus
respiratory epithelium
columnar cells goblet cells basal cells small granule cells brush cells
olfactory epithelium is located where
above superior concha
olfactory epithelium histology
olfactory cells
supporting cells
basal cells
brush cells
nasopharynx has what on histology
lymphocytes
larynx histology
cartilagnious respiratory epithelium
true vocal cord is lined by
stratified squamous epithelium
trachea histology
several cartilaginous rings
respiratory epithelium
in layers:
mucosa
submucosa with serous mucous glands
bronchi histology
little plates of cartilage
sm muscle
bronchioles histology
no cartilage anymore
primarily sm musc
Clara cells
what are some ex of parts with stratified squamous epithelium
oropharynx
mucosa of nasal vestibule
vocal folds
respriatory passage of smokers
fxn of clara cells
make surfactant
pulmonary lobule
a terminal bronchiole and the lung tissue it supplies
pulmonary acnius
portion of lung supplied by a respiratory bronchiole
you have smooth muscle from trachea up to where?
alveolar duct
you have cartilage up until where?
bronchi
what components are there in surfactant?
phospholipid (phosphotidylcholine, phosphotidylglycerol)
proteins
antioxidants
what is in the alveolar wall?
collagen fibrils and elastin
fibroblasts and macrophages
clinical conditions affecting respiratory passages
interstitial fibrosis infections acute respiratory distress syndrome emphysema lung cancer
most of conducting passageways are lined with what epithelium
ciliated pseudostratified columnar epithelium with goblet cells = respiratory epithelium
where is smooth muscle abundant?
bronchioles
in terminal bronchioles, goblet cells are replaced by?
multifunctional clara cells