Upper Respiratory
Which structures are in the upper respiratory system?
Nose
Paranasal sinuses
Pharynx
What structures make up the lower respiratory system?
Larynx
Trachea
Bronchi
Alveoli
Lungs
What are 3 functions of the upper respiratory system?
Warm air
Humidifies air (adds water)
Filters air
Name ONE of the 3 functions of the larynx.
Provide an open airway
Act as a switching mechanism to direct air and food to their proper channels
Voice production
What upper respiratory structure decreases the weight of the skull and produces mucus?
Paranasal sinuses
Glottis closes to prevent exhalation and abdominal muscles contract, causing intra-abdominal pressure to rise.
Valsalva maneuver
Name the 3 regions of the pharynx.
Nasopharynx
Oropharynx
Laryngopharynx
Point where trachea branches into R/L main bronchi.
Carina
Which region of the pharynx permits only air to pass and is made up of pseudostratified ciliated columnar?
What 3 structural changes occur as we move deeper into the bronchial tree?
Less supportive cartilage (rings to plates to nothing)
Epithelium becomes simpler (pseudostratified columnar to simple columnar to simple cuboidal)
Amount of smooth muscle increases