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72 Cards in this Set

  • Front
  • Back
The lingula of the mandible is important landmark for what?
inferior alveolar nerve block
The oral region contains what?
teeth
gingivae (teeth)
tongue
palate
tonsils
What are the two parts of the oral cavity?
vestibule
oral cavity proper
What is the vestibule part of the oral cavity?
space between lips/cheek & teeth/gums
communicates with exterior via mouth
What is the oral cavity proper enclosed by?
upper/lower dental arches
What is the anterior boundary of the oral cavity proper?
teeth/gums
What is the lateral boundary of the oral cavity proper?
teeth/gums
What is the roof of the oral cavity proper?
palate
What is the floor of the oral cavity proper?
mylohyoid and geniohyoid muscles
What is the posterior boundary of the oral cavity proper?
opens to oropharynx
What muscles make up the muscular core of the lips?
orbicularis oris (+ other mm of facial expression)
What is the motor innervation (SE) of the muscular core of the lips?
CN VII
What is the muscular core of the lips covered in?
skin externally
mucosa internally
What is the arterial supply of the lips?
superior/inferior labial arteries (from facial artery)
t/f

Calcium ion bonds directly to tropomyosin molecules.
false, troponin
What is the lymphatic drainage of the lips?
most to submandibular nodes
medial lower lip to submental nodes
What is the SA innervation of the lips?
upper lip: superior labial branches of infraorbital nerve (CN V2)
lower lip: inferior labial branches of mental nerve (CN V3)
What is the muscle of the cheeks?
buccinator m.
What is the innervation of buccinator m.?
SE via CN VII
What are the lateral walls of the oral cavity?
the cheeks
What is the arterial supply of the cheeks?
buccal branches of maxillary artery
What is the venous drainage of the cheeks?
facial vein and some to cavernous sinus
What is the pattern of lymph drainage of the cheeks?
to buccal nodes and then to submandibular nodes
What is the SA innervation of the cheeks?
mostly buccal nerve (CN V3)
What type of tissue are the gums?
mucosal covered fibrous tissue
What is the SA innervation of the upper row of teeth/gingivae?
CN V2
What is the SA innervation of the upper row of teeth/gingivae?
CN V3
What is alveolus?
socket for tooth roots
How many deciduous teeth are there?
20
How many permanent teeth are there?
32
The upper row of teeth receive blood supply from what arteries?
superior alveolar arteries (3rd part of maxillary artery)
What nerve provides SA innervation of the upper row of teeth?
superior alveolar nerves (CN V2)
The lower row of teeth receive blood supply from what arteries?
inferior alveolar arteries (1st part of maxillary artery)
What nerve provides SA innervation of the lower row of teeth?
inferior alveolar nerves (CN V3)
What are the functions of salivary glands?
secrete saliva
moisten food
lubricate food
initiate starch digestion
assists taste, prevention of tooth decay
Where is the parotid gland located?
external to ramus of mandible
What is the path of VE innervation to the parotid gland?
via CN IX (lesser petrosal nerve) to otic ganglion via auriculotemporal nerve to gland
Where does the parotid duct open?
opens opposite 2nd molar
Where is the submandibular gland located?
along body of mandible and wraps around body of mandible
What is the path of VE innervation to the submandibular gland?
via chorda tympani (CN VII) to lingual nerve (CN V3) to submandibular ganglion which sends postganglionic fibers to the gland
Where does the submandibular duct open?
open at the sublingual caruncle
What is the relationship of the submandibular duct to the lingual nerve?
spirals around/crosses the lingual nerve
Where is the sublingual gland located?
deep to mucosa
floor of oral cavity
lateral to tongue
Where do the sublingual ducts open?
the sublingual gland has several ducts which open into the oral cavity lateral to tongue
What is the pathway of VE innervation of sublingual gland?
via chorda tympani (fron CN VII) to lingual nerve to submandibular ganglion to gland via postganglionic parasympathetics on lingual nerve
What are the functions of the tongue?
taste
speech
manipulate food
aid in swallowing
Where is the anterior 2/3 of the tongue located?
in oral cavity
Where is the posterior 1/3 of the tongue located?
in oropharynx
What part of the tongue is protrusable?
anterior 2/3
What separates the posterior 1/3 of the tongue from the epiglottis?
valleculae
The valleculae are important landmarks for what?
intubation
What is the motor (SE) innervation of the tongue?
CN XII (except palatoglossus which is CN X)
What is the sensory (SA) innervation of the anterior 2/3 of the tongue?
lingual nerve (CN V3)
What is the sensory (SA) innervation of the posterior 1/3 of the tongue?
CN IX
What is the taste (VA) innervation of the anterior 2/3 of the tongue?
CNVII via chorda tympani via lingual
What is the taste (VA) innervation of the posterior 1/3 of the tongue?
CN IX (CN X carries some taste from near epiglottis)
What nerve innervates the intrinsic muscles of the tongue?
CN XII
What is the action of the intrinsic tongue movements?
fine movements
shape changes
What are the actions of the extrinsic muscles of the tongue?
anchor tongue to hyoid
position control (protrusion/retraction, elevation/depression)
What is the motor innervation to the extrinsic muscles of the tongue?
CN XII
The genioglossus muscle is superior to what muscles?
geniohyoid
mylohyoid
What is the relationship of the lingual artery and CN XII to hyoglossus muscle?
lingual artery is deep to hyoglossus
CNXII is superficial to hypoglossus
What nerve provides motor innervation to palatoglossus?
CN X
What is the arterial supply of the tongue?
lingual artery
Lymph from the root of the tongue drains where?
to deep cervical nodes
Lymph from body of tongue drains where?
deep cervical nods
Lymph from apex of tongue drains where?
submental nodes
Lymph from lateral tongue drains where?
submandibular nodes
What veins are used to administer sublingual drugs?
deep lingual veins because they are visible deep to mucosa
The pharyngeal tonsils drain what area?
auditory tube
The palatine tonsils drain what area?
arches, vasculature
The lingual tonsils drain what area?
root of tongue