Respiratory Physio I Flashcards
Bronchus
has cartilage
glands
mucus blanket
bronchiole
has ciliated pseudostrafitied epithelium
smooth muscle cell
mucus glands
CT and cartilage
smaller bronchioles
no cartilage
thinner wall
Function of goblet cells
produce mucus, form mucus blanker, allow smoother air to go through, making it as humid as possible
What are some things that could increase mucus production
smoke, pollutants
What are the submucosal tracheobronchial glands
mucous and serous cells
where are the submucosal tracheobronchial glands located
where there is cartilage
What are the submucosal tracheobronchial glands controlled by?
SANS, PANS, peptidergic, local inflammatory mediators
What is the function of the ciliated epithelial cells
to produce periciliary fluid
What does periciliary fluid due
CL- secretion
Na+ absorption
What is happening in CF
abnormal Cl- secretion causes and inability to absorb Na+ which caused thick mucus
Function of Type II cell
produce surfactant which helps prevent collapse of aveoli
Function of Type I cell
cover 90–95% of alveor surface
very thin
main structure component
Function of alveolar macrophage
partrol alveolar surface and phagocytize inspired particles - defense mechanism
What are the pores of kohn
pores that communicate between adjacent alveoli
What is the function of kohn pores
collateral ventilation - taking gases from 1 lung unit to another. also allow passage of other materials
What is the composition of the respiratory membrane
layer of fluid lining in alveolis containing surfant alveolar epithelium epithelia basment membrane interstial space cap basement membrane cap endothelial membrane
What is the composition of the lung interstitium
CT smooth muscle lymphatics capillaries cells
What are fibroblasts
prominent cells of the lung interstitium
What is the function of fibroblasts
to produce collagen and elastic which help with distensibility and elastic recoil of lungs
What is the pleura
a serous membrane that folds back on itself to form a 2 layers structure
What is the function of the pleural cavity
transmitts negative pressure produced by chest expansion to lung parenchyma and alveoli during normal respiration
What are the major differences between the parietal and visceral pleura
pareital contain stomata and microvessels are closer to the pleural surface
Function of parietal pleura
pleural liquid formation
