Chapter 17 - Nose, Mouth, and Throat Flashcards
What is the columella of the nose?
part that divides the two nares and is continuous with the septum
What is the ala of the nose?
lateral outside wing
What are vibrissae?
nasal hairs
What do nasal hairs filter?
coarse matter from inhaled air
What does the ciliated mucous blanket filter?
dust and bacteria
Why does nasal mucosa appear redder than oral mucosa?
rich blood supply used to warm inhaled air
What divides the nasal cavity?
the septum
What is the Kiesselbach’s plexus?
vascular network in the septum
Where is the most common site of nosebleeds?
Kiesselbach’s plexus
What are turbinates?
paralleled body projections in the nasal cavity
What is the role of turbinates?
Increase surface area so more blood vessels and mucous membranes are available
How many turbinates are there?
3
What is the meatus?
a cleft under each turbinate that is named for the turbinate above
What drains into the middle meatus?
sinuses
What drains into the inferior meatus?
tears from nasolacrimal duct
Which cranial never is the olfactory nerve?
I
Where does CN I transmit impulses?
temporal lobe
What are the paranasal sinuses?
air-filled pockets in the cranium
What is the role of the paranasal sinuses?
lighten the weight of the skull, resonate sound, provide mucus
How many frontal sinus are there?
2
Where are the frontal sinus located?
frontal bone above and medial to the orbits
Where are the maxillary sinuses?
in the maxilla (cheekbones)
Where are the ethmoid sinuses?
between the orbits
Where are the sphenoid sinuses?
deep within the skull in the sphenoid bone
Where is the hard palate?
anterior
What is the hard palate made of?
bone
What colour is the hard palate?
whitish
Where is the soft palate?
posterior
What colour is the soft palate?
pink
What is the frenulum?
a midline fold of tissue connecting the tongue to the floor of the mouth
Which salivary gland is the largest?
parotid
Where is the parotid gland?
in the cheeks, in front of the ear
What is the parotid glands duct called?
Stensen’s duct
Where is Stensen’s duct?
across from the second molar
How big is the submandibular gland?
the size of a walnut
Where is the submandibular gland?
beneath the mandible at the angle of the jaw
Which salivary gland is the smallest?
sublingual
Where is the sublingual gland?
the floor of the mouth
How many permanent teeth do adults have?
32
What kind of tissue are the gums?
fibrous tissue covered in mucous membrane
What separates the oropharynx from the mouth?
anterior tonsillar pillars
When does tonsillar tissue begin to decrease in size and function?
after puberty
The nasopharynx is continuous with the ____________
oropharynx
Where is the nasopharynx?
above the oropharynx and behind the nasal cavity
When does salivation start in infants?
3 months of age
How many temporary deciduous teeth do children have?
20