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15 Cards in this Set
- Front
- Back
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respiratory epithelium is...
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pseudostratified ciliated columnar epithelium with goblet cells
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olfactory epithelium cells
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pseudostratified ciliated columnar epithelium WITHOUT goblet cells
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features of olfactory cells
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they have olfactory cells(bipolar cells), sustenacular (supporting cells) and basal cells(stem cells); have bowman's glands in lamina propriya
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lingual surface of eppigottis and true vocal cords share what type of epithelium?
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stratified squamous epithelium
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what is the epithelium shared by phranygeal surface of epiglottis and false(vestibular) vocal cords?
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pseudostratified ciliated epithelium
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characteristic of trachea/ extrapulmonary bronchi?
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thick basement membrane; underneath is thin layer of elastic lamina arranged longitudinally --> replaces what would be circular muscle!
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secondary bronchi characteristics
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hyaline cartilage no longer C-shaped =>it is in plates; first time you see (smooth) muscle underneath the respiratory epithelium;
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bronchiole characteristics
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no cartilage ->replaced by smooth muscle; has ciliated cubiodal cells called Clara cells (secretory/macrophages)
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terminal bronchiole characteristics
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simple cubiodal epithelium is mostly Clara cells,no goblet cells, some cilia, circular smooth muscle
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alveolar characteristics
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simple squamous, barely any goblet cells, have plates of muscle on either end of avleolus
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alveolar duct characteristics
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"turkey drumstick" like smooth muscle; simple squamous epithelium cells which are type I and type II pneumocytes (secrete surfactant); dust cells (marcropahges)
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alveolar sac characteristics
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sac= bunch of avleoli; permits gaseous exchange; second marriage of basement membrane of endothelial cells of capillary and the type I pneumocytes (aka numero uno) of the alveoli; pores of kohn
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alveloi consist of three cell types
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mostly type I pneumocytes; type II pneumocytes; alveolar macrophages (dust cells)
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type II pneumocytes
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contain lamellar bodies that store surfactant; form tight junctions with neighboring type I cells; have a holey apperance (type I cells look like simple squamous cells); behaves like a stem cell!
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differentiate between thin and thick portions of alveoli
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if fibrobalst between basement membrance of endothelial cell and type 1 cell then considered THICK; if fused basal lamina then considered THIN
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