Oral Cavity and Pharynges DSA Wright

Question 1

what is the waldeyers lymphatics ring composed of?

Answer 1

Palatine pharyngeal and lingual tonsils that drain to deep cervical lymph nodes

Question 2

The hard palate is the ___ 2/3rds of the palate and soft is the ___1/3.

Answer 2

anterior posterior

Question 3

When you swallow what two structures move to cover the nasopharynx?

Answer 3

soft palate and the uvula

Question 4

The fauces of the palate are bounded by muscular folds. The anterior paired fold is called ____ and the posterior is called ___.

Answer 4

Glossopalatine arch Pharyngopalatine arch

Question 5

What epithelium covers the tongue?

Answer 5

Lightly keratinized stratified squamous epithelium

Question 6

What attaches tongue to the floor of oral cavity?

Answer 6

Lingual Frenulum

Question 7

What makes up the majority of saliva and when is it produced the most?

Answer 7

Water makes up 99% of volume and most is secreted during eating

Question 8

Where does the parotid gland duct go How much saliva is produced?

Answer 8

oral vestibule next to the second molar, also supplies 25-30% of saliva

Question 9

Submandibular gland, how much saliva is produced and wehre does it empty?

Answer 9

60-70% and it empties through a papilla in the floor of the mouth on lateral sides of frenulum

Question 10

Sublingual gland, how much is produced and where does it empty?

Answer 10

3-5% and it is more mucousy than others, it opens onto inferior surface of oral cavity posterior to submandibular duct papilla, h

Question 11

What binds the roots of the teeth to the alveolar process, and what kind of joint is it?

Answer 11

Periodontal ligament and a gomphosis joint

Question 12

How many deciduous teeth and permanent teeth?

Answer 12

20 and 32

Question 13

Tensor veli palatini is innervated by what nerve and what is its action?

Answer 13

CN V3 and it tenses the soft palate and acts on pharyngotympanic tube for depressurizing middle ear

Question 14

What does levator veli palatini do and whats it’s innervation?

Answer 14

CN X elevates tensed palate and acts on pharyngotympanic

Question 15

What does paralysis of levator veli palatini or tensor veli palatini lead to?

Answer 15

Reflux of oral contents into nasal cavity and pharynogotympanic tube

Question 16

Describe steps to swallowing.

Answer 16

1. Voluntary stage: bolus compressed against palate and pushed into oropharynx by the tongue and soft palate muscles
2. Involuntary and rapid stage: soft palate is elevated closing the nasopharynx. The pharynx widens and shortes to fit the bolus of food. The suprahyoid and longitudinal pharyngeal muscles contractelevating the larynx
3. Involuntary: contraction of all three pharyngeal constrictor muscles forces food bolus inferiorly into esophagus