Pharynx

Question 1

nasopharynx

Answer 1

posterior to nasal cavities, anterior to CV1-2

Question 2

oropharynx

Answer 2

posterior to oral cavity, anterior to CV3

Question 3

laryngopharynx

Answer 3

posterior to larynx, anterior to CV4-5

Question 4

salpingopharyngeus

Answer 4

assists other pharyngeal muscles in swallowing (CN X)

Question 5

palatoglossus

Answer 5

approximates palatoglossal arches to close off oral cavity from oropharynx while chewing (CN X)

Question 6

palatopharyngeus

Answer 6

pulls up pharynx to shorten it during swallowing (CN X)

Question 7

valleculae

Answer 7

depressions between posterior tongue and epiglottis. Formed by median and lateral glossoepiglottic folds.
CC: endotracheal intubation, curved blade slips into valleculae

Question 8

piriform recess

Answer 8

depression lateral to larynx, contains superior br. of internal laryngeal n.

Question 9

external muscle layer

Answer 9

superior, middle, and inferior constrictors

Question 10

internal muscle layer

Answer 10

palatopharyngeus, salpingopharyngeus, stylopharyngeus

Question 11

stylopharyngeus

Answer 11

elevates pharynx and larynx during swallowing/speaking. Passes between sup. and middle constrictors. CN IX

Question 12

Gap 1

Answer 12

between base of skull and sup. constrictor. Transmits levator veli palatini and auditory tube

Question 13

Gap 2

Answer 13

between sup. and middle constrictors. Transmits stylopharyngeus and CN IX

Question 14

Gap 3

Answer 14

between middle and inf. constrictors. Transmits internal br. of superior laryngeal n. and superior laryngeal a.

Question 15

Gap 4

Answer 15

between inf. constrictor and esophagus. Transmits recurrent laryngeal n. (inf. laryngeal n.) and inf. laryngeal a.

Question 16

arterial supply

Answer 16

1. superior thyroid a.

2. ascending pharyngeal a.

Question 17

venous drainage

Answer 17

1. superior venous plexus-pterygoid plexus

2. pharyngeal vv.

Question 18

GVA

Answer 18

CN IX

Question 19

GVE-P

Answer 19

CN X

Question 20

GVE-S

Answer 20

sympathetic chain

Question 21

GVE

Answer 21

CN X, except stylopharyngeus (CN IX)

Question 22

tonsillar lymph drainage

Answer 22

to jugulodigastric nodes

Question 23

general pharyngeal lymph drainage

Answer 23

to retropharyngeal nodes, deep cervical nodes