Nose, Mouth, Throat Flashcards
Nose function
Warms, moistens, and filters
-Rich blood supply to warm inhaled air
Sensory organ for smell
Olfactory receptors (hair cells) lie at
at roof of nasal cavity and upper third of septum
Olfactory receptors merge into olfactory nerve (CN I) which…
transmits to the temporal lobe of the brain.
Sense of smell—enhances
pleasure and taste of food
Upper one-third of external nose
composed of bone; lower part is cartilage
Paranasal sinuses
air-filled pockets that communicate with nasal cavity
Lighten weight of skull bones.
Serve as resonators for sound production.
Provide mucus, which drains into nasal cavity.
What happens if paranasal sinuses are blocked?
sinusitis
Which two pairs of sinuses can be examined
frontal and maxillary
Frontal paranasal sinus
above and medial to orbits
Maxillary sinuses
In maxilla along side walls of nasal cavity
Mouth
first segment of digestive system; an airway for the respiratory system
Oral cavity
bordered by lips, palate, cheeks, tongue; contains teeth, gums, tongue salivary glands.
Hard palate composition
bone
soft palate composition
muscle
Frenulum
midline fold of tissue connecting the tongue to the floor of the mouth
Tongue
mass of striated muscle arranged in crosswise pattern so it can change shape & position
Tongue enhances functions in mastication, swallowing, teeth cleansing, speech formation
Microscopic taste buds
papillae of tongue—at back and long sides and on soft palate
Mouth contains 3 pairs of salivary glands
parotid
sublingual
submandibular
Parotid gland
largest
from within checks in front of ear
duct opens on buccal mucosa opposite 2nd molar
Submandibular gland
beneath mandible at angle of jaw
duct opens on either side of frenulum
sublingual gland
lies w/n the floor of the mouth, under tounge