anatomy- oral and pharynx

Question 1

the portion of the oral cavity which lies btw lips and gums or cheeks and gums

Answer 1

oral vestibule- external to tooth roots

Question 2

what are openings into the oral vestibule?

Answer 2

labial glands

parotid duct

Question 3

the portion of the oral cavity which lies internal to the tooth roots?

Answer 3

oral cavity proper

Question 4

what is elevated during swallowing to close the opening btw nasopharynx and oropharynx?

Answer 4

soft palate

Question 5

what are the 2 lateral arches that the palatine tonsil lies between?

Answer 5

palatoglossal and palatopharyngeal arches

Question 6

what is the lymphoid tissue found on the oropharyngeal surface of the tongue?

Answer 6

lingual tonsil

Question 7

what is ankyloglossis?

Answer 7

tongue tie- long frenulum

Question 8

what is the job of the pharynx?

Answer 8

it conducts food to the esophagus and air to the larynx; both respiratory and digestive

Question 9

where is the pharynx located?

Answer 9

C1
extends from the base of the skull to the inferior border of the cricoid cartilage

posterior to the nasal cavity, oral cavity and larynx

Question 10

the nasopharynx communicates with the nasal cavity through the _____ and with the oropharynx through the ________

Answer 10

choanae; pharyngeal isthmus

Question 11

is the pharyngeal isthmus open or closed during swallowing?

Answer 11

closed

Question 12

where are the pharyngeal tonsils/adenoids located?

Answer 12

posterior wall of the nasopharynx

Question 13

what connects the nasopharynx with the tympanic cavity?

Answer 13

pharyngotympanic tube

Question 14

what is the small tonsil that lies immediately behind the opening of the pharyngotympanic tube?

Answer 14

tubal tonsil

Question 15

where does the oropharynx lie?

Answer 15

C2-3

Question 16

how does the oropharynx communicate with the oral cavity?

Answer 16

oropharyngeal isthmus

Question 17

what structure is found in the oropharynx?

Answer 17

palatine tonsils btw the palatoglossal and palatopharyngeal folds

Question 18

what is the space between the palatoglossal and palatopharyngeal folds called?

Answer 18

tonsillar fossa

Question 19

what 4 tonsils form the tonsillar ring around the oropharynx?

Answer 19

lingual, palatine, tubal and pharyngeal

Question 20

what are the boundaries of the laryngeal inlet?

Answer 20

aryepiglottic folds and interarytenoid notch

Question 21

what is the location of the laryngopharynx where food gets stuck and can cause bad breath? (fish bones)

Answer 21

piriform fossa (recess)

Question 22

what muscle opens the pharyngotympanic tube and elevates the pharynx?

Answer 22

salpingopharyngeus

Question 23

what are the 3 muscles that elevate the pharynx?

Answer 23

stylopharyngeus
palatopharyngeus
salpingopharyngeus

Question 24

what is the potential space btw the buccopharyngeal fascia and pre vertebral fascia that permits movement of pharynx and esophagus during swallowing?

Answer 24

retropharyngeal space

Question 25

describe the steps of deglutition

Answer 25

tongue moves bolus into OROPHARYNGEAL ISTHMUS ->palatoglossus and palatopharyngeus squeeze bolus into OROPHARYNX- also levator veli palatini and tensor veli palatini elevate soft palate to close pharyngeal isthmus -> pharynx, larynx and hyoid elevate, epiglottis flexes back over LARYNGEAL INLET -> superior, middle and inferior constrictors contract to move food through the OROPHARYNX and LARYNGOPHARYNX and into the ESOPHAGUS -> peristalsis propels it down into stomach