Oral Cavity and Pharynx Flashcards
the inferior pharyngeal constrictor originates on the:
thyroid and cricoid cartilage (pink arrow)

red arrow

lesser palatine foramina (often multiple on each side)
green arrow

torus tubaris (swoosh!)
green arrow

incisive foramen
the hard palate is made up of:
maxilla and palatine bones (anterior 2/3 of palate)
extrinsic muscles of the tongue
genioglossus (green), hyoglossus (blue) , palatoglossus (red) , styloglossus (pink)

the soft palate is made up of:
muscles and soft tissue (posterior, 1/3 of palate)
red arrow, branch of?

greater palatine nerve, branch of the pterygopalatine ganglion
the submandibular duct emerges from the submandibular gland superior to the ___________
mylohyoid (green arrow)

the superior pharyngeal constrictor originates on the:
pterygomandibular raphe (blue arrow)

What innervates the mandibular teeth?
inferior alveolar nerve, primary branch of CN V3 (mandibular)
(blue arrow)

palatopharyngeus action
elevate the pharynx
“open your mouth and say ahhh” checks the function of which muscle? which nerve?
uvula pointing to the side means the levator veli palatini not functioning on one side, which is innervated by vagus nerve
the _________ nerve innervates the anterior region of the palate
nasopalatine nerve through the incisive foramen
pink arrow

tensor veli palatini wrapping around pterygoid hamulus
the uvula points to the ______, which indicates the ______ side of the _______ nerve is damaged

right, left, vagus (levator veli palatini)
the lingual vein is ________ to the hyoglossus muscle
superficial
(red arrow)

gag reflex sensory:_____, motor:_______
sensory: glossopharyngeal CN IX
motor: vagus CN X
(barfing in vegas) (in on 9, out on 10)
green dot

submandibular gland
What type of fibers are carried by the greater palatine nerve?
parasympathetic fibers to the hard palate
palatoglossus muscle innervation
vagus (CN X) palate = Stern’s 2nd law
green arrow, branch of?

greater palatine artery, branch of the descending palatine artery, which is a branch of the maxillary artery
blue area

oropharynx
the greater palatine artery anastomoses with the:
sphenopalatine artery from the nasal cavity
blue arrow, branch of?

inferior alveolar nerve, primary branch of CN V3 (mandibular)
blood supply to the inferior aspect of the tongue
deep lingual artery
(blue arrow)

palatoglossus origin –> insertion
soft palate (red arrow) –> lateral side of posterior tongue (pink arrow)
(green arrow)

red arrow

cartilagenous auditory tube
green arrow

stylopharyngeus muscle
*(innervated by glossopharyngeal, running through superior and middle pharyngeal constrictors)
blue arrow

greater palatine foramen
what travels through the greater palatine foramen?
descending palatine artery, greater palatine nerve
(blue arrow)

levator veli palatini action
elevate soft palate
muscles that originate on the soft palate
palatoglossus, palatopharyngeus
pink arrow

submandibular ganglion
red arrow

lingual tonsil
pink arrow

hypoglossal nerve CN XII
lingual artery is ______ to the hyoglossus
deep
(green arrow)

blue dot

superior pharyngeal constrictor
Why can drug absorption be used “under” the tongue
deep lingual vessels are near the inferior surface of the tongue, which is thinner than the anterior surface (less protected) and the moist environment facilitate drug absorption
the sublingual gland empties via:
numerous ducts in sublingual fold (plica)
(green arrows)

red arrow

pharyngeal tonsils
red arrow

cartilagenous auditory tube
green arrow

terminal sulcus
red arrow

glossopharyngeal CN IX nerve supplying motor innervation to stylopharyngeus
green arrow

stylopharyngeus muscle
*(innervated by glossopharyngeal, running through superior and middle pharyngeal constrictors)
instrinsic muscles of the tongue innervation
hypoglossal (CN XII)

muscles that insert on the soft palate
tensor veli palatini, levator veli palatini
blue line

palatopharyngeal arch
green area

nasopharynx
green arrow

tensor veli palatini

levator veli palatini innervation
CN X vagus nerve (palate = Stern’s 2nd law)
which muscle wraps around the pterygoid hamulus
tensor veli palatini
(green/pink arrows)

red arrow, what structure is it in?

external carotid artery (and terminal branches), parotid gland
red arrow

lingual nerve
the adenoids are also known as
the pharyngeal tonsils (red arrow)

red arrow

salpingopharyngeus
green dot

palatine process (maxilla)
green arrow

palatopharyngeus
green dot

sublingual gland
innervation path to the submandibular and sublingual glands:
preganglionic parasympathetic from facial nerve (CN VII) –> hitchhikes on chorda tympani –> hitchhikes on lingual nerve –> synapse in the submandibular ganglion –> postsynaptic parasympathetics hitchhike on lingual nerve (AGAIN) to the glands
light blue area

laryngopharynx
intrinsic muscles of the tongue action:
fine control of the tongue (curling, twisting, etc.)
alternate name for auditory tube
pharyngotympanic tube, eustachian tube
blue dot

horizontal plate of the palatine
red arrow

lingual artery
green arrow

tensor veli palatini
which is more anterior, sublingual gland or submandibular gland?
sublingual gland
green arrow

pterygoid hamulus
green arrow

Killian’s triangle
red arrow

palatine tonsil
posterior 1/3 innervation of the tongue
glossopharyngeal CN IX (sensory and special sensory)
vagus CN X (sensory and special sensory)
CN IX = yellow, CN X = red

green arrow

palatoglossus muscle
What innervates the maxillary teeth?
superior alveolar nerves, branches of CN V2
(green arrows)

palatopharyngeus origin –> insertion
soft palate (red arrow) –> lateral wall of pharynx (light blue arrow)
(blue arrow)

the stylopharyngeus muscle dives between the _____ and the _____ at the level of the ______
superior and middle pharyngeal constrictors at the level of the posterior 1/3 of the tongue (blue arrow)

palatopharyngeus innervation
vagus nerve (CN X) palate = Stern’s 2nd Law
the middle pharyngeal constrictor originates from:
the graeter horn of the hyoid (red arrow)

another name for the floor of the oral cavity
sublingual fold
blue arrow

glossopharyngeal CN IX
green arrow

submandibular duct
red arrow

palatoglossus (extrinsic muscle of the tongue)
blue arrow

styloid process
the sublingual gland is ______ to the floor of the oral cavity
deep
(green dot)

blue dot

hyoglossus (extrinsic muscle of the tongue)
muscle and nerve deficit

right genioglossus, right hypoglossal (CN XII)

What are the two regions of the oral cavity?
oral vestibule (green)
oral cavity proper (blue)
teeth = border

blue arrow

end of the cartilaginous pharyngotympanic tube (auditory tube)
the lingual tonsils are located:
on the posterior 1/3 of the tongue (blue arrow)

blue arrow

levator veli palatini
the _______innervates of the extrinsic muscles of the tongue, except for the _______ muscle, which is innervated by _________
hypoglossal nerve (CN XII) (gloss = Stern’s 3rd law)
palatoglossus
vagus nerve (CN X) (palate= Stern’s 2nd law)
the submandibular duct empties via the
sublingual caruncle
(red arrow)

the nasopharynx is posterior to the:
choanae and soft palate (green area)

the greater palatine artery supplies blood to the:
hard palate
(green arrow)

tensor veli palatini origin –> insertion
cartilagenous auditory tube –> side of soft palate
(green arrow)

the pharyngeal tonsils are located
superoposterior wall of the nasopharynx (red arrow)

blue arrow, what structure is it in?

retromandibular vein, parotid gland
red arrow

lingual vein
blue arrow

deep lingual artery
blue arrow

chorda tympani
red arrow

palatine tonsil
innervation to the anterior 2/3 of the tongue
sensory: lingual nerve from CN V3
special sensory (taste): chorda tympani, hitchhiking on lingual from facial nerve CN VII
pink arrow

tensor veli palatini wrapping around the pterygoid hamulus
green arrow

palatine tonsils
green arrow

glossopharyngeal nerve CN IX providing sensory to pharynx
red dot

middle pharyngeal constrictor
what is the only nerve of the pharynx not innervated by the vagus nerve? Where does it recieve innervation?
stylopharyngeus, glossopharyngeal nerve
stylopharyngeus action
pharyngeal elevator (blue arrow)

blue arrow

lingual nerve
blue arrow, branch of?

lesser palatine artery, branch of descending palatine artery, which is a branch of the maxillary artery
green arrow, branch of?

lingual artery, branch of external carotid
blood supply to the teeth:
parallels the nerves, superior and inferior alveolar nerves

pink arrow

tensor veli palatini
What type of fibers are carried on the lesser palatine nerve?
parasympathetic fibers to the soft palate
light blue arrow

soft palate
what represents the overlapping region of the tongue
valate papilla
(blue arrows)

the lesser palatine artery supplies blood to the:
soft palate
(blue arrow)

blue arrow

palatopharyngeus
green dot

genioglossus (extrinsic muscle of the tongue)
blue arrow

levator veli palatini
the lingual vein (red arrow) runs with which nerve?

hypoglossal nerve CN XII
green arrows, branches of?

superior alveolar nerves, branches of CN V2 (maxillary)
the laryngopharynx is posterior to the
larynx (light blue area)

blue arrow

valate papilla
pink arrow

deep lingual vein
which nerve travels from the nasal cavity to the palate through the incisive foramen
nasopalatine nerve
levator veli palatini origin –> insertion
cartilagenous auditory tube –> soft palate
(blue arrow)

green area

oral vestibule (narrow space between teeth and cheeks/lips)
blue arrow

stylopharyngeus
green arrow

hyoglossus muscle
lateral pharyngeal space makes a go-between for infection to:
danger space, carotid sheath, orbit, cavernous sinus
pink arrow, branch of?

lesser palatine nerve, branch of pterygopalatine ganglion
green arrow

pharyngeal raphe
muscles of the pharynx are innervated by:
vagus CN X
EXCEPT STYLOPHARYNGEUS = GLOSSOPHARYNGEAL
blue arrow

submandibular duct crossing over the lingual nerve superiorly
blue arrow

vagus nerve CN X supplying motor innervation to pharynx
green line

palatoglossal arch
tensor veli palatini action
tense the soft palate
red arrow

soft palate
blue arrow

lingual tonsils
blue arrow

glossopharyngeal CN IX
pink arrow

styloglossus (extrinsic muscle of the tongue)
sympathetic innervation to the salivary glands
lingual artery plexus via external carotid plexus (facial artery plexus contributes to a lesser extent)
the palatine tonsils are between the _____ and ______
palatoglosseus and palatopharyngeus (green arrow)

pink dot

inferior pharyngeal constrictor
what travels through the lesser palatine foramina?
lesser palatine nerve(s)
(red arrow)

What is a common site of esophageal diverticulum formation? Why?
Killian’s triangle, weak point in pharynx in inferior constrictor due to change in orientaion of muscle fibers

palatoglossus action
elevate the tongue
the pterygomandibular raphe is a connective tissue sheath between _____ and ______
superior pharyngeal constrictor and buccinator (blue line)

tensor veli palatini innervation
CN V3 mandibular nerve (tensor = Stern’s 1st Law)
purple area

oral cavity proper (interal to the tooth row)
the pharyngeal tonsils are also known as
adenoids
red arrow

levator veli palatini
palatopharyngeus action
pharyngeal elevator (green arrow)

light blue arrow

soft palate
the palatine process is a part of the ______ bone
maxilla
green arrow, what structure is it in?

motor branches of the facial nerve, parotid gland
the oropharynx is posterior to the:
oral cavity (blue area)

blue arrow

lingual nerve (postganglionic parasympathetic nerves hitchhike to glands)