CH.1 The anatomy and physiology of the respiratory system Flashcards
The Airways
–the passageways between the ambient environment and the gas exchange units of the lungs (the alveoli) are called the conducting airways
Conducting Airways
–upper and lower airways
Upper Airway
–consists of nose, oral cavity, pharynx and larynx
–humidify and warm or cool the inspired air
–precent foreign materials entering tracheobronchial tree
–important in speech and smell
Nose
–filter
–humidify
–condition (warm or cool) inspired air
Nasal septum
–the internal portion of the nose, the nasal septum, divides the nasal cavity into two different chamber
The Nares
–air enters the nasal cavity through the two openings formed by the septal cartilage and the alae nasi called the nares (nostrils)