Panopto 29: Respiratory system Flashcards
classify olfactory epithelium
pseudostratified columnar epithelium
composition of olfactory epithelium
olfactory cells, sustentacular cells, basal cells, brush cells
what are olfactory cells and describe their structure?
bipolar neurons, the axons bundle to form the olfactory nerve, and non motile cilia on the apical surface contain odorant receptors
sustentacular cells and describe it
most numerous, have microvilli, function: supporting cells for anything the olfactory cells need, physical and metabolic, produce odorant binding protein: a carrier molecule that helps deliver odorants to receptors, helps olfactory cells receive chemicals that they’re supposed to be detecting
basal cells and describe it
basement membrane, don’t make it to cell surface and they’re stem cells have the potential to replace all the cells of the epithelium even the olfactory cells
brush cells
same sensory cells that we find in the typical respiratory epithelium
Bowmans glands alternative name
aka olfactory glands.
where is typical transitional epithelium found
Continuous from the fossa to the larynx. Additional exceptions in the larynx: epiglottis and vocal cords. Type non-keratinzied stratified squamous
Where does the trachea begin and end?
Trachea begins at the larynx and extends from the neck to the middle of the thorax or chest cavity
how long is the trachea?
10 inches
what happens when the trachea ends
it divides into 2 passageways each is a primary bronchus each one enters a lung one goes to the lung on the left and the other goes to the lung on the right.
how many times does each primary bronchus divide
9-12 times making smaller passageways called bronchi down to a size about 5mm in diameter each division will have some cartilage.
What is it called when a division results in a passageway without cartilage?
a bronchiole
what is the epithelium associated with the primary bronchus’
typical respiratory epithelium
classification of bowman’s glands
classification: simple serous acini
