Histology or respiratory system Flashcards
what are the 4 layers that make up the respiratory systme
mucosa, submucosa, cartiladge, advenitita
what do cilia move in lung
particles out of lungs upward
what is the first layer of empithium in trancea
pseudostratified columnar epithelium
function and location of lamina propira
under epithilum cells, contains elastin h blood vessles
what do the submuclosa glands secrete
watery sectreions
what is the fucntion of the adventitl
supports tracea and connects it to surround tissues e..g thyroid and osogous, it also coits nerves, vessels and adioose tissue
function of clara cells
they secrete surfactnat
what type of epitheluk is in broncioiles
Pseduodstified ciliated columnar epithelium then simple columnar epithelium, lined by low cuboidal epitelum
what layer increase in bronchiolies
smooth musles
what is mising in broncilies
non cilated cells, submucosal glands, cartiladge, goblet cells
role of goblet cells
secretion and produce mucous laryer
what are the alveolar ducts made out of
smooth muscel, elastin and collagen
what are teh alveolary sacts surrounded by
blood vessesl and pulmonary capillies
what are the alveoli surrouned by
blood vssels
role of clarla cells
protect airways, regeneative brncial epithilm, produce surfactant