Respiratory System Flashcards
Only external part of the respiratory system
Nose
Route through which air enters the nose
Nostrils (nares)
Interior of the nose
Nasal cavity
Divides the nasal cavity
Nosal septum
Last part of the nasal cavity
Posterior nasal aperture
Located in the mucosa on the superior surface
Olfactory receptors
Rest of the cavity is lined with?
Respiratory mucosa
What does the respiratory mucosa do?
- Moistens air
- Traps incoming foreign particles
- Enzymes in the mucus destroy bacteria chemically
Projections from the lateral walls
Conchae
- Increase surface area
- Increase air turbulence within nasal cavity
- Increased trapping of inhaled particles
Conchae
Separates the nasal cavity from the oral cavity
Palate
A palate that is anterior and supported by bone
Hard palate
Posterior and unsupported palate
Soft palate
Cavities within frontal, sphenoid, ethmoid, and maxillary bones surrounding the nasal cavity
Paranasal sinuses
- Lighten the skull
- Acts as a resonance chamber for speech
- Produce mucus
Sinuses