Oral cavity and Pharaynx

Question 1

Oral region includes

Answer 1

oral cavities
teeth, gingivae
tongue
palate
region of palatine tonsils

Question 2

Function includes

Answer 2

ingestion
prep for digestion
salvia aids in forming food bolus
Deglution: swalling is initates in oral cavity- voluntart

Question 3

Tongue made up of skeletal and is innervated by

Answer 3

All mm by hypoglossal nerve except palatoglossus mm

Question 4

General Sensation of tongue (touch and temp)

Answer 4

Anterior 2/3rds lingual nerve Mandibular div
Posterior 1/3rd Glossophararyngeal

Question 5

Special Sensation: taste

Answer 5

Anterior 2/3rds: Facial
Post 1/3rd Glossopharyngeal;

Question 6

Special sensation: root of tongue

Answer 6

sensory and special taste is vagus nerve branch internal laryngeal

Question 7

Palate is what?

Answer 7

floor of nasal cavites
separates b/w oral cavity and nasopharynx
2 regions
Hard and soft

Question 8

Hard Palate: consists of what bone?

Answer 8

Concave in shape
forms anterior 2/3rds
Palatine process of the maxialle
horizontal plates of palatine bones

Question 9

Soft Palate

Answer 9

Posterior 1/3rd
suspends posteriorly from the hard palate

Question 10

Uvula?

Answer 10

grape, partly rests on the tongue

Question 11

Soft Palate consists of what?

Answer 11

no bony skeleton
fibromuscular tissue

Question 12

Soft Palate function

Answer 12

initially: during swallowing the palate tenses
tongue presses against it
squeezing bolous of food

Elevated posteriorly and superiorly, prevents food from passing up into the nasopharaynx

Question 13

Mm of soft palate Nerve Supply

Answer 13

All mm of the pharyngeal branch of the Vagus nerve via the pharayngeal plexus
Except tensor veli palatine which is Mandib Div

Question 14

Palatine Tonsils:

Answer 14

are found b/w palatoglossal and palatopharyngeal arches
region called oropharynx
Mostly lymphoid tissue
contains lymphocytes which of WBC

Question 15

Pharynx.. where found?

Answer 15

part of digestive system
extends from base oof skull to the inferior border of the cricoid cartilage
and inferior border of C6 posteriorly

Question 16

3 regions of Pharynx

Answer 16

Naso-Pharynx: post to nasal cavity and superior to the soft palate
Oro-Pharynx: post to mouth and oral cavity
Laryngopharynx: post to larynx

Question 17

Types of tonsils:

Answer 17

Pharyngeal Tonsils: Adenoids, found in the roof and walls of nasopharynx
Tubal Tonsils: lymphoid tissue near the pharyngeal office of the pharyngotympanic tube
Palatine Tonsils: lymphoid tissue found either side of the oropharynx b/w the palatoglossal arches and palatoglossal

Question 18

Pharyngeal Mm:

Answer 18

External 3 mm which lie on the posterior wall and sides of the pharynx which posteriorly insert into the median fibrous raphe
descends from pharyngeal tubercle on the base of the skull to the oesophagus
Involuntary mm contract superior to inferior
propel food into oesophagus

Question 19

Nerve Supply of Pharyngeal Mm

Answer 19

Motor and Sensory mainly from the pharyngeal plexus of nerves
Motor- mainly: vagus except stylopharyngeus which is glossopharyngeal
Sensory of glossopharyngeal and maxill div of trigeminal