Lung Histology I Flashcards
What makes up the conduction zone?
Nose, Pharynx, Larynx, Trachea, Bronchi, Bronchioles, and Terminal Bronchioles
What makes up the respiratory zone?
Respiratory bronchioles, Alveolar ducts, Alveolar sacs and Alceoli
What is the function of the conducting zone?
Transport air; warm, humidify and filter the air; Olfaction; and sound production
What type of cells make up the conduction zone?
Pseudostratified columnar ciliated with goblet cells which trnsitions to simple columnar and finally simple cuboidal.
What type of cells make up the vocal folds and epiglottis?
Nonkeratinized Stratified Squamous
What are the 5 cells associated with respiratory epithelium?
- Ciliated columnar cells
- Goblet Cells
- Brush Cells
- Basal (Stem) Cells
- Small Granule Cells.
What is the role of the ciliated columnar cells?
To move mucus along the epithelial surface
What is the role of goblet cells?
Secrete mucus to trap harmful particles
What is the role of the brush cells?
They are covered with microvilli and are thought to be sensory receptors.
What is the role of the Basal Cells?
They are used to regenerate cells.
What is the role of the Small granule cells?
They are hormones the regulate the mucous and serous secretions of the other cells.
What epithelium makes up the Nares?
Keratinized stratified squamous
What makes up the nasal septum?
Hyaline cartilage and bone
What are the functions of the nasal conchae?
Increase surface area exposed to air and disrupt air flow
Where is the olfactory epithelium found?
Superior nasal concha
