Oral Cavity and Pharynges

Question 1

When swallowing, what happens to the soft palate and the uvula?

Answer 1

they elevate to close off the opening of the nasopharynx

Question 2

What is the term for the opening between the oral cavity and the oropharynx?

Answer 2

fauces

Question 3

what are the fauces bounded by?

Answer 3

paired muscular folds: glossopalatine arch and the pharyngopalatine arch

Question 4

where are the palatine tonsils housed?

Answer 4

between the glossopalatine and pharyngopalatine arch

Question 5

how does the inferior surface of the tongue attach to the floor of the oral cavity?

Answer 5

by the lingual frenulum

Question 6

what are the three different types of salivary glands?

Answer 6

parotid gland, submandibular gland, and sublingual gland

Question 7

how is the parotid salivary gland innervated?

Answer 7

parasympathetic axons in CN IX

Question 8

how is the submandibular gland innervated?

Answer 8

parasympathetic axons in CN VII

Question 9

How is the sublingual gland innervated?

Answer 9

parasympathetic axons in CN VII

Question 10

where is the parotid gland located?

Answer 10

anterior and inferior to the ear, partially overlying the masseter muscle

Question 11

where does the parotid duct open into?

Answer 11

into the oral vestibule next to the second upper molar

Question 12

Which salivary gland produces the most saliva?

Answer 12

submandibular gland

Question 13

where does the submandibular gland duct open into?

Answer 13

in the floor of the mouth on the lateral sides of the lingual frenulum

Question 14

What is the first step in chemical digestion?

Answer 14

when amylase in saliva begins to break down carbohydrates

Question 15

What does saliva contain that helps inhibit bacterial growth in the oral cavity?

Answer 15

antibodies and lysozyme

Question 16

what is the first part of mechanical digestion?

Answer 16

ingestion/mastication

Question 17

what are the dental alveoli?

Answer 17

sockets within the alveolar processes of both the maxillae and mandible

Question 18

the roots, dental alveoli, and the periodontal ligament form what kind of joint?

Answer 18

gomphosis joint

Question 19

how many baby teeth do we have?

Answer 19

20

Question 20

how many permanent teeth do we have?

Answer 20

32

Question 21

which pharynx gets larger when swallowing?

Answer 21

the oralpharynx

Question 22

which pharynx gets smaller when swallowing?

Answer 22

the laryngopharynx

Question 23

what do you find if you remove the mucosa and the palatine tonsil?

Answer 23

the glossopharyngeal nerve and the tonsillar branch of the facial artery

Question 24

what is the vascularization of the palatine tonsil?

Answer 24

tonsilar branch of the ascending palatine artery and the tonsilar branch of the facial artery

Question 25

what is the tensor veli palatini innervated by?

Answer 25

CN V3

Question 26

what is the action of the tensor veli palatini?

Answer 26

it tenses the soft palate and it acts on the pharyngotympanic tube, which depressurizes the middle ear

Question 27

what is the levator veli palatini innervated by?

Answer 27

the pharyngeal plexus of CN X (vagus nerve)

Question 28

what is the action of the levator veli palatini?

Answer 28

it elevates the tensed palate and acts on the pharyngotympanic tube

Question 29

what happens if you have paralysis of the tensor veli palatini or the levator veli palatini muscles?

Answer 29

it can lead to reflux of the oral contents into the nasal cavity and pharyngotympanic tube dysfunction

Question 30

when looking at the posterior head/neck, you see the facial nerve- what is it coming out of?

Answer 30

the stylomastoid foramen