Oral Cavity

Question 1

What is the superior boundary (roof) of the oral cavity?

Answer 1

Hard and soft palate

Question 2

What is the Inferior boundary (floor) of the oral cavity?

Answer 2

Mylohyoid muscle

Question 3

What is the wall of the oral cavity?

Answer 3

Cheeks

Question 4

What is the anterior and lateral boundaries of oral cavity?

Answer 4

Teeth with gingiva and alveolar processes

Question 5

What is the posterior boundary of the oral cavity?

Answer 5

Palatoglossal fold (beginning of oropharynx)

Question 6

Hard palate makes up _____ of the palate.

Answer 6

3/5

Question 7

Hard palate seperates _____ and _____.

Answer 7

Respiratory and digestive tracts

Question 8

What is the primary function of hard palate?

Answer 8

to isolate the mouth in suckling

Question 9

Oral side of hard palate contains _____ _____ _____.

Answer 9

palatine mucous glands

Question 10

Hard palate is lined by ______ epithelium mucous membrane

Answer 10

non-keratinized stratified squamous

Question 11

What is palatal rugae of the hard palate?

Answer 11

Transverse palatine folds on the anterior part

Question 12

What is the shape/name of the sutures of the hard palate?

Answer 12

A cross, referred to as “cruciform suture”

Question 13

Which suture of the Cruciform suture is this:
Between the palatine processes of the left & right maxilla and between the horizontal processes of the left & right palatine bones

Answer 13

Median palatine suture

Question 14

Which suture of the Cruciform suture is this:

Between the horizontal plate of the palatine bone and the palatine process of the maxilla (palatomaxillary suture)

Answer 14

Transverse palatine suture

Question 15

Soft palate is also called?

Answer 15

Velum

Question 16

_____ hangs from the posterior border of the soft palate in the midline

Answer 16

Uvula

Question 17

Soft palate is Lined by ______ epithelium, mucous membrane

Answer 17

non-keratinized stratified squamous

Question 18

Aponeurosis of the ______ muscle continues from hard palate and forms structural support for the soft palate

Answer 18

tensor veli palatini

Question 19

Which 2 muscles originate above the soft palate?

Answer 19

• Levator veli palatini

- Tensor veli palatini

Question 20

Which 2 muscles insert below the soft palate?

Answer 20

• Palatoglossus

- Palatopharyngeus

Question 21

Which muscle is completely contained within the palate?

Answer 21

Musculus uvulae

Question 22

What is the innervation of Tensor veli palatini muscle?

Answer 22

Mandibular nerve (V3) of Trigeminal N.

Question 23

Tendon of the tensor veli palatini muscle passes around the _____ of the medial pterygoid plate and becomes the palatine aponeurosis.

Answer 23

hamulus

Question 24

What is the function of tensor veli palatini muscle?

Answer 24

Contraction tightens the palatine aponeurosis – tension of the palate and opening of the auditory tube

Question 25

Levator veli palatini muscle inserts perpendicularly into the _____ aponeurosis of the soft palate

Answer 25

Tensor

Question 26

What is the function of levator veili palatini muscle?

Answer 26

Elevates the palate to establish the nasopharyngeal seal and opens the auditory tube

Question 27

What is the innervation of the levator veli palatini muscle?

Answer 27

Pharyngeal plexus of Vagus nerve

Question 28

Uvulae muscles contract when palate is _____.

Answer 28

raised

Question 29

Uvulae muscles help establish the nasopharyngeal seal by _____ the posterior margin of the soft palate

Answer 29

tensing

Question 30

When only one uvulae muscles contract, it draws the uvula to the _____ side

Answer 30

same

Question 31

Uvulae muscles are innervated by?

Answer 31

Pharyngeal plexus of vagus nerve

Question 32

If uvula is drawn to the RIGHT side, vagus nerve is damaged on the _____ side.

Answer 32

LEFT

Question 33

Closure of nasopharyngeal isthmus by elevation of the palate –establishment of velopharyngeal seal–important in _____, _____ and _____.

Answer 33

swallowing, speaking and blowing

Question 34

In swallowing, the soft palate is _____ to prevent food | from entering the nasal cavity

Answer 34

raised

Question 35

During quiet respiration, the soft palate hangs _____.

Answer 35

vertically

Question 36

In swallowing, the soft palate is _____ to prevent food | from entering the nasal cavity

Answer 36

raised

Question 37

Closure of the oropharyngeal isthmus (fold) is by contraction of the _____ and _____ muscles (extrinsic muscles of the soft palate) against the base of the tongue –establishment of oropharyngeal seal – important in swallowing

Answer 37

palatoglossus and palatopharyngeal

Question 38

What are the 2 muscles that insert below the palate?

Answer 38

Palatoglossus and palatopharyngeus

Question 39

What is the origin of palatoglossus muscle?

Answer 39

Palatine aponeurosis and posterior aspect of hard palate

Question 40

What is the insertion of palatoglossus muscle?

Answer 40

Lateral aspect of tongue

Question 41

What is the function of palatoglossus muscle?

Answer 41

Raises tongue to close off oral cavity from oropharynx during swallowing and depresses the soft palate.

Question 42

What is the innervation of palatoglossus muscle?

Answer 42

Pharyngeal plexus by way of the vagus nerve

Question 43

What is the origin of palatopharyngeus muscle?

Answer 43

Palatine aponeurosis (posterior edge of hard palate)

Question 44

What is the insertion of palatopharyngeus muscle?

Answer 44

Posterior aspect of thyroid cartilage, esophagus, lateral wall of pharynx

Question 45

What is the function of palatopharyngeus muscle?

Answer 45

Raises pharynx during swallowing (pulls walls of pharynx superiorly, anteriorly and somewhat medially) and tenses soft palate.

Question 46

What is the innervation of palatopharyngeus muscle?

Answer 46

Pharyngeal plexus by way of the vagus nerve

Question 47

Which arteries supplies blood to the hard and soft palate, respectively?

Answer 47

Greater and lesser palatine branches of the descending palatine artery (of maxillary artery)

Question 48

Which arteries supplies blood to the lateral sections of the palate?

Answer 48

Ascending palatine branch and tonsillar branch of facial artery

Question 49

Which artery supplies blood to the pterygoid plexus and peritonsillar plexus?

Answer 49

Venous return

Question 50

Which 2 nerves carries general sense from the Hard palate?

Answer 50

Greater palatine nerve and nasopalatine nerve (Branches of maxillary nerve V2)

Question 51

Which nerve travels through the greater palatine foramen to get to the Hard palate for general sense?

Answer 51

Greater palatine nerve

Question 52

Which nerve travels through the incisive foramen to get to the Hard palate for general sense?

Answer 52

Nasopalatine nerve

Question 53

Which 2 nerves carries general sense from the Soft palate?

Answer 53

Lesser palatine nerve (branch of maxillary n.) and Glossopharyngeal nerve

Question 54

Which nerve travels lesser palatine foramen to get to the Soft palate for general sense?

Answer 54

Lesser palatine nerve

Question 55

Which nerve is responsible for gag reflex if pharynx is contacted?

Answer 55

Glossopharyngeal nerve

Question 56

Which nerve is responsible for reflex if Soft palate is contacted?

Answer 56

Trigeminal nerve

Question 57

Which 2 nerves are responsible for autonomic Innervation to the Hard and Soft Palate, glands and blood vessels?

Answer 57

Greater and Lesser Palatine Nerves

Question 58

Most muscles of the palate are innervated by the ______.

Answer 58

pharyngeal plexus, vagus nerve (CN X)

Question 59

Most muscles of the palate are innervated by the pharyngeal plexus, vagus nerve (CN X). Which muscle is the only one not? What innervates it?

Answer 59

Tensor veli palatini –by mandibular nerve (CN V3) | 2