Palate and Oral Cavity

Question 1

what are the landmarks/structures in the oral cavity?

Answer 1

hard palate
soft palate
palatopharyngeal arch
palatoglossal arch
uvula
palatine tonsil

Question 2

what is a fauces?

Answer 2

area the houses the palatine tonsil

Question 3

what are the muscles of the palate?

Answer 3

tensor veli palatini
levator veli palatini
palatoglossus
palatopharyngeus

Question 4

what is a tonsillectomy and what cranial nerve could be injured during it?

Answer 4

removal of the tonsils
CN IX glossopharyngeal causing loss of taste and sensation to posterior 1/3 of the tongue

Question 5

what cranial nerve gives taste and general sensation to the epiglottis?

Answer 5

CN X

Question 6

where can popcorn husks get trapped?

Answer 6

valleculae

Question 7

what are the muscles of the tongue?

Answer 7

mylohyoid
geniohyoid
genioglossus

Question 8

what are the muscles of the floor of the mouth?

Answer 8

styloglossus
hyoglossus
stylohyoid

Question 9

what is the main function of the styloglossus?

Answer 9

retraction (retrusion) and elevation of the tongue on the same side as the active muscle

(left muscle retracts tongue to the left)

Question 10

what is the main function of the hyoglossus?

Answer 10

depresses the tongue

Question 11

what is the main function of the genioglossus?

Answer 11

protrusion of the tongue to the opposite side of the active muscle

(right muscle will protrude muscle to the left)

Question 12

what would happen if there is a lesion at the right hypoglossal nerve?

Answer 12

• tongue would be deviated to the left due to the unopposed styloglossal pull
• tongue would deviate to the right upon protrusion due to left genioglossal protrusion to the right

Question 13

what are the nerves of the tongue?

Answer 13

lingual nerve (branch of V3)
hypoglossal nerve (CN XII)
glossopharyngeal nerve (CN IX)

Question 14

what are the arteries of the tongue?

Answer 14

facial and lingual arteries

Question 15

what does the submandibular ganglion hang off of and what pathway is it?

Answer 15

lingual nerve

parasympathetic for the sublingual and submandibular glands for secretomotor functions

Question 16

what do the tensor and levator veli palatini muscles do?

Answer 16

pull the soft palate (uvula) towards the same side as thee active muscle

elevate the soft palate and seal off the nasopharynx during swallowing

Question 17

what CN innervates the tensor veli palatini muscle? levator veli palatini muscle? palatoglossus muscle? palatopharyngeus muscle?

Answer 17

CN V3
CN X
CN X
CN X