Class notes nose/mouth/throat Flashcards
Nose function:
first segment of respiratory system
Warms, moistens, and filters
Sensory organ for smell
Olfactory receptors (hair cells) location:
lie at roof of nasal cavity and upper third of septum.
Olfactory receptors merge into olfactory nerve (CN I) which transmits where?
temporal lobe of the brain.
Sense of smell function:
enhances pleasure, taste of food
Upper one-third of external nose is:
composed of bone; lower part is cartilage.
Paranasal sinuses function:
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.
Paranasal sinus occlusion is called:
sinusitis
Two pairs of sinuses can be examined:
frontal; maxillary.
Maxillary location:
in maxilla, along side walls of nasal cavity
Frontal location:
above and medial to orbits
Mouth function:
first segment of digestive system; an airway for the respiratory system
Oral cavity contains:
bordered by lips, palate, cheeks, tongue; contains teeth, gums, tongue salivary glands.
Hard palate is made of:
bone
soft palate made of:
muscle
Frenulum function:
midline fold of tissue connecting the tongue to the floor of the mouth
Tongue made of:
mass of striated muscle arranged in crosswise pattern so it can change shape & position
Tongue functions:
enhances functions in mastication, swallowing, teeth cleansing, speech formation, also functions in taste sensation.
Microscopic taste buds called:
papillae of tongue—at back and long sides and on soft palate
Mouth contains 3 pairs of salivary glands
parotid, submandibular, sublingual
Parotid location:
largest—within cheeks in front of ear—duct opens on buccal mucosa opposite 2nd molar.
Submandibular location:
beneath mandible at angle of jaw—duct opens on either side of frenulum.
Sublingual location:
lies within the floor of the mouth, under tongue.
Salivary glands functions:
secrete saliva, which lubricates food bolus; starts digestion cleans and protects the mucosa.
How many teeth in adult?
32 teeth—each has crown, neck, root
Scientific name for gums
Gingivae