specialised cells and tissue Flashcards
where is cartilage found
lining of the trachea and bronchus
what does cartilage do
supports the airways to prevent collapsing when air pressure drops
where is surfactant found
coats the lungs
what does surfactant do
a phospholipid layer which prevents the alveoli from collapsing when air pressure drops
where is smooth muscle found
lining of the trachea and bronchioles
what does smooth muscle do
contracts causing the airways to narrow
where are goblet cells found
lining of the trachea and bronchioles
what do goblet cells do
secrete mucus to trap foreign particles
where are ciliated epithelial cells found
lining of the trachea and bronchioles
what do ciliated epithilial cells do
move the mucus towards the mouth to be removed
where is elastin found
at the lining of all airways and alveoli
what does elastin do
allows lung tissue to stretch and return to their normal shape
where are squamous epithilial cells found
alveoli
what is the role of squamous epithelium
creates a short diffusion pathway due to it being the one cell thick layer
