BHSC 1200 RESPIRATORY AND DIGESTIVE SYSTEMNOSTRILS

BHSC 1200 RESPIRATORY AND DIGESTIVE
SYSTEMNOSTRILS
Either of two openings in the nose.




internal nasal cavity
lies in and posterior to the external nose




superior, middle, and inferior nasal conchae
Increase the surface area of the mucosa, which enhances air turbulence and aids in
trapping large particles in the mucus

ABC




maxillary sinus
largest paranasl sinus; pyramidal; on cheek bone lateral to nasal bone

Red




frontal sinus

,sinus located near the superior portion of the nose bridge

A




ethmoid sinus
Mucosa lined air spaces located above the sphenoid Sinus and below the frontal sinus




sphenoid sinus
sinus above and behind the nose

A




nasopharynx
region of the pharynx at the back of the nose and above the soft palate

1




oropharynx
central portion of the pharynx between the roof of the mouth and the upper edge of the
epiglottis

, 2




laryngopharynx
lower part of the pharynx, just below the oropharyngeal opening into the larynx and
esophagus

3




opening of eustachian tube
Allows for pressure balance between the middle ear and pharynx




hyoid bone
a U-shaped bone in the neck that supports the tongue




thyrohyoid membrane
connects thyroid cartilage to hyoid bone

red line