Nasal Cavity II

Question 1

What are the three paranasal sinuses?

Answer 1

Maxilla - Frontal - Sphenoid

Question 2

Where is the sphenoid sinus located?

Answer 2

Within the presphenoid bone

Question 3

Why are infections common in the paranasal sinus?

Answer 3

Because the foramen to drain these cavities doesn’t allow passive drainage when animal is in normal posture

Question 4

Why do the molars cause a problem with the maxillary sinus?

Answer 4

Roots grow into the sinus
Transfer infection
Can damage when those teeth are removed

Question 5

What are the two basic parts of the palate?

Answer 5

Hard palate

Soft palate

Question 6

What two foramen are within the palatine bone?

Answer 6

Major and minor palatine foramen

Question 7

Where is the incisive papilla?

Answer 7

Raised bump directly caudal to the central incisors

Question 8

What does the palatinus muscle do?

Answer 8

Shortens and ventrally curls palate

Question 9

What is the origin of the levator veli palatini?

Answer 9

Muscular process of the temporal bone

Question 10

What is the insertion of the levator veli palatini?

Answer 10

Dorsal surface of the soft palate

Question 11

What nerve innervates the levator veli palatini?

Answer 11

Branch of the pharyngeal plexus

Mostly CN X and some CN IX

Question 12

What is the action of the levator veli palatini?

Answer 12

Elevate soft palate

Question 13

What is the origin of the tensor veli palatini?

Answer 13

Muscular process of the temporal bone

Question 14

What is the insertion point of the tensor veli palatini?

Answer 14

Lateral soft edge of the soft paalte after wrapping around pterygoid hamulus

Question 15

What nerve innervates the tensor veli palatini?

Answer 15

Mandibular nerve

Question 16

What is the action of the tensor veli palatini?

Answer 16

Tense the soft palate

Question 17

What does the palatoglossus m. do?

Answer 17

From the lateral aspect of the palate to the tongue

Question 18

What do the palato. muscles form bilaterally?

Answer 18

Palatoglossal arch

Question 19

What is present within the tonsilar fossa?

Answer 19

Palatine tonsil

Question 20

What are the three major palatine arteries?

Answer 20

Descending - Major - Minor

Question 21

What is the path of the minor palatine artery?

Answer 21

Passes caudual to the margin of the hard palate to reach the soft palate

Question 22

What is the path of the major palatine artery?

Answer 22

Enters caudal palatine foramen and passes through the canal to reach hard palate

Question 23

What happens to the rostral branch of the major palatine artery?

Answer 23

Runs through the palatine groove to the palatine fissure and gives off branch to nasal cavity

Question 24

What happens to the caudal branch of the major palatine foramen?

Answer 24

Exits the minor palatine foramen and forms an anastomosis between major and minor palatine arteries

Question 25

What branches come off the maxillary and that supply sensory to the palatine mucosa?

Answer 25

Major palatine - Accessory palatine - Minor palatine