Palate

Question 1

What spaces and structures does the palate separate?

Answer 1

oral cavity from nasal cavity and oropharynx from nasopharynx

Question 2

What bones make up the hard palate?

Answer 2

the palatine process of the maxillary bone makes up the anterior 2/3 and the horizontal plate of the palatine bone makes up the posterior 1/3

Question 3

What covers the hard and soft palate?

Answer 3

mucosa and palatine glands

Question 4

What is the function of the soft palate?

Answer 4

to elevate during swallowing to close off nasopharynx from oropharynx

Question 5

All but one of the palatine muscles are innervated by what nerve? What muscle is the exceptions and what is it’s innervation?

Answer 5

CN X, vagus nerve innervates all but palatine muscles except tensor veli palatini which is innervated by the medial pterygoid nerve from V3

Question 6

What is the origin and insertion of levator veli palatini?

Answer 6

O: temporal bone and Eustachian tube cartilage
I: soft palate

Question 7

What is the origin and insertion of tensor veli palatini?

Answer 7

O: sphenoid bone and Eustachian tube cartilage
I: soft palate

Question 8

What is the origin and insertion of muscles uvulae?

Answer 8

O: hard palate
I: uvula

Question 9

What is the origin and insertion of the palatoglossus?

Answer 9

O: palate
I: lateral tongue

Question 10

What is the origin and insertion of the palatopharyngeus?

Answer 10

O: hard and soft palate
I: wall of pharynx

Question 11

What is the action of levator veli palatini?

Answer 11

elevate and retract the palate

Question 12

What is the action of tensor veli palatini?

Answer 12

tighten and flatten the palate

Question 13

What is the action of musculus uvulae?

Answer 13

elevate the uvula

Question 14

What is the action of palatoglossus?

Answer 14

sphincter of the fauces, elevates tongue

Question 15

What is the action of patatopharyngeus?

Answer 15

elevate the pharynx

Question 16

What is the fold of mucosa covering the palatoglossus muscles and what space does it form?

Answer 16

palatoglossal arch which forms a space called the fauces

Question 17

What is the opening between the oral cavity and oropharynx?

Answer 17

fauces

Question 18

What is the fold of mucosa covering the palatopharyngeus muscle?

Answer 18

palatopharyngeal arch

Question 19

What is the space on the lateral wall of oropharynx between the palatopharyngeal arch and the palatoglossal arch?

Answer 19

tonsilar fossa

Question 20

The tonsilar fossa contains what?

Answer 20

palatine tonsils

Question 21

What supplies general sensory innervation to the palate?

Answer 21

palatine nerves from V2

Question 22

What supplies taste innervation to the palate?

Answer 22

palatine nerves and greater petrosal nerve from CN 12, hypoglossal

Question 23

Parasympathetic innervation to the palatine glands produces what?

Answer 23

secretomotor function

Question 24

What is the path of parasympathetic fibers that innervate the palatine glands?

Answer 24

preganglionic fibers come from CN 7, facial nerve and travel along greater petrosal nerve (a branch of CN12, hypoglossal) until they reach the pterygopalatine ganglion in the pterygopalatine fossa. Here they synapse with post ganglionic cell bodies, whose fibers follow palatine nerves into the palate to innervate their target organ, the palatine glands

Question 25

What supplies blood to the palate?

Answer 25

palatine branches of the maxillary and facial arteries