L51 Histo Repiratory Flashcards
(23 cards)
2 functional division
conducting zone
respiratory zone
Mucous comes form
goblet cells and mucous secreting glands
Respiratory epithelium
Types
Contains
ciliated pseudostratified columnar
Basal cells
Goblet cells
Stem cells from which all other cell types aris
Basal cells
blood vessels and mucous glands located in
Lamina propria
Submucosa
Nasopharynx epithelium
Ciliated pseudostratified columnar
Oropharynx epithelium
Nonkeratinized stratified squamous
Laryngopharynx epithelium
Nonkeratinized stratifed squamous
Vocal volds is covered with
nonkeratinized stratified squamous epithelium
Most of larynx is
Respiratory epithelium
Trachea mucosa
Epithelium
Basment membrane
Lamina propria
Respiratory epithelium on THICK basement membrane
Lamina propria with lots of elastic fibers
Trachea submucosa
Loos CT with mucus secreting acini w/ serous demilunes
Trachea layers
Mucosa
Submucosa
Cartilaginous layer
Adventitia
As bronchi get smaller what happens
Cartilaginous rings decrease and disappear
Smooth muscle increases
Psudostatified columnar cells get shorter
Glands disappear
Goblet cells disappear
Terminal bronchiole epithelium
ciliated simple cubodal
Non ciliated cells interspersed w/ simple cuboidal epithelium in terminal bronchiole
Clara cells
Order of terminal bronchiole conducting system
Terminal bronchiole Respiratory bronchioles Alveolar ducts Alveolar sacs Alveoli
Respiratory bronchiole epithelium and surroundings
Proximal vs distal
Cuboidal resting on eosinophilic smooth muscle surrounded by thin layer of CT
occasional alveoli
Proximal: ciliated and clara cells
Distal: Clara cells
Alveoli per adult lung
150 to 250 million
Alveoli epithelium contains
Type I and type II alveolar cells
Occasional brush cells
Type 1 alveolar cells
Other name
Shape
Alveolar surface cells
Squamous
Type 2 alveolar cells
Other name
Shape
Septal cells
Cuboidal
Alveolar macrophages
Other name
dust cells
