Oral Cavity

Question 1

Hard Palate

Answer 1

hard surface against which the tongue presses during phonation (speech) and food is
compressed during mastication; also serves as the attachment site for the upper teeth; consists of incisive fossa, greater and lesser foramen
supplied by: sphenopalatine and greater palatine

Question 2

Soft Palate

Answer 2

important muscles for swallowing,chewing, and making sure we don’t choke; consists of 5 muscles:

• tensor veli palatini (V3)
• levator veli palatini (CN 10)
• musculus uvulae (CN 10)
• palatoglossus (CN 10)
• palatopharyngeus (CN 10)

Supplied by: lesser palatine, ascending palatine, palatine artery, dorsal lingual

Question 3

Tensor Veli Palatini

Answer 3

extends hard palate by tensing the soft palate; opens the auditory tube

Question 4

Levator Veli Palatini

Answer 4

elevates soft palate

Question 5

Palatoglossus m.

Answer 5

Elevates the posterior tongue; draws the soft palate to the tongue

Question 6

Palatopharyngeus m.

Answer 6

Tenses the soft palate; pulls the walls of pharynx superiorly, anteriorly, and medially during swallowing

Question 7

Extrinsic Tongue Muscles

Answer 7

Adjust position of the tongue (ex: stick tongue out) 
There are 4: 
-Genioglossus (CN 12)
-Hyoglossus (CN 12)
-Styloglossus (CN 12) 
-Palatoglossus (CN 10)

Question 8

Mylohyoid

Answer 8

forms the floor of the oral cavity; so it is the first muscle that lines the mandible

Question 9

Intrinsic Tongue Muscles

Answer 9

Adjusts the shape of the tongue 
There are 4: 
-Superior longitudinal 
-Inferior longuitudinal 
-Transverse 
-Vertical

Question 10

Sensation innervatation posterior 1/3 of actual tongue

Answer 10

general- CN 9- Glossopharyngeal, lingual branch

special- taste- CN 9, lingual branch

Question 11

Sensation innervation anterior 2/3 of actual tongue

Answer 11

general -CN 5 V3 branch- Lingual n. (ice cream feels cold)

special- chorda tympani n branch of CN 7 (ice cream tastes sweet)

Question 12

Sensory Innervation for hard and soft palates

Answer 12

branches of V2

Question 13

Nasopalatine n.

Answer 13

sensory innervation for anterior hard palate

Question 14

Greater palatine n.

Answer 14

provides sensory innervation to hard palate

Question 15

Lesser palatine n.

Answer 15

provides sensory innervation to soft palate

Question 16

Muscles of Mastication

Answer 16

• Temporalis
• Masseter
• Medial Pterygoid m.
• Lateral Pterygoid m.

They all close the jaws except the lateral pterygoid muscle which opens it.
All are supplied by branches of the mandibular nerve (V3)