NURS 3628 Sherpath Notes (Sherpath Notes Test 2)

Respiratory System: • Upper respiratory tract - nose, pharynx, and larynx • Lower respiratory tract - trachea, bronchi, bronchioles, and lungs including alveoli Upper airway • The main function of the upper respiratory system is to filter, warm, and humidify inhaled air. Nose & pharynx: • Air enters the body through the nares or nostrils, two nasal cavities lined with mucous membrane. • Infants are obligate nasal breathers until at least 2 months of age. • Air can also e...