Exam 1 histo Flashcards
Larynx cell types of surface
pseudostratified columnar
except vocal folds (stratified squamous)
Brush cells description
blunt microvilli
fibers from sensory nerve
general sensation
Contents of granule cells in respiratory tract
catecholamines 5HT calcitonin bombesin cells stain with silver salts
Hyaline cartilage in respiratory tract
trachea through the segmental bronchi
bronchioli do not have hyaline
Gas exchange of respiratory tract
bronchioli through alveoli
bronchi do not exchange gas
Clara cells
no cilia domed apical appearance rER visible secrete surfactant (lipoprotein) helps protect bronchioli
Pneumocyte type I
alveolar epithelium
air/blood barrier
Pneumocyte type II
produce surfactant
dome shaped/round nucleus
Septal CT cells
in alveoli
produce elastic fibers
Pores of Kohn
connections b/t alveolar sacs
allows air flow even with obstruction
Emphysema
decreased SA of alveoli
pulmonary vessel wall thickening
Bronchi characteristics
goblet cells
glands
hyaline cartilage
