Histology Flashcards
Functions of respiratory system
Provide O2 to body
Remove Co2
4 steps in respiration
- Ventilation
- External respiration
- Gas transport
- Internal respiration
Components of respiratory system
Conducting portion
Respiratory portion
Conducting portion
Direct the passage of air into and from the body
Functions as a unit to deliver and to remove air from the respiratory portion
Respiratory portion
Performs exchange of gases between atmosphere and blood
Respiratory epithelium function
Trap dirt, bacteria, mucus, and move it to the pharynx also to warm the air passing over the surface of the epithelium
Respiratory epithelium
Pseudostratified
3 cell types of respiratory epithelium
Ciliated epithelial cells
Goblet cells
Basal cells
Functions of nasal cavity
Warm, filter, and moisturize air
Chemoreception
Important regions of the nasal cavity
Vestibule with cutaneous region
Turbinates
Vomeronasal organ
Vestibule
Entrance to the nose
Stratified squamous epithelium
Turbinates
Bones divide cavity
Disrupt air flow
Lined with RE and OE
Increased surface area for filtration
Olfactory epithelium 3 cell types
Olfactory cells
Sustentacular support cells
Basal cells
Bowman’s gland
Sero-mucous secretion
To wash away odorants, allow rapid restimulation of olfactory epithelium
Vomeronasal organ
Paired organ
Either side of septum
Contains olfactory epithelium