Pharynx

Question 1

What are the 6 types of muscles in pharynx?

Answer 1

3 constrictors

3 longitudinal

Question 2

Which way do the constrictors all atach?

Answer 2

anteriorly

Question 3

where do the 3 constrictors attach?

Answer 3

Pterygomandibular raphe
Hyoid
Thyroid cartilage

Question 4

What is a common posterior attachment for muscles?

Answer 4

pharyngeal raphe

Question 5

What is a common posterior attachment for muscles and

where is the pharyngeal tubercle?

Answer 5

Pharyngeal tubercle (occipital bone)
Pharyngeal raphe

Question 6

What nerve innervated the constrictor muscles?

Answer 6

CN X

Question 7

Where do all 3 longitudinal pharyngeal muscles inser?

Answer 7

phayrngeal wall

Question 8

Which is the only pharyngeal muscle not to be innervated by vagus?

Answer 8

Stylopharngeus (CN IX)

Question 9

name the 3 longitudinal pharyngeal muscles

Answer 9

stylo
palato
salpingopharngeous

Question 10

Talk about etymology behind salpingo-

Answer 10

usually relates to tubes. salpingopharngeuous is a tube like muscle and also attaches to the tympanic tube.

Question 11

What is the function of stylopharngeus?

Answer 11

Elevates pharynx

Question 12

What is function of salpingopharyngeous?

Answer 12

Elevate pharynx

Question 13

What is function of palatopharyngeuous

Answer 13

elevate pahrynx and close oropharyngeal ithmus (mouth opening at back of mouth)

Question 14

Which two muscles squeeze bolus to back of mouth?

Answer 14

palatoglossus and palatopharyngeal

Question 15

which 2 muscles seal the nasopharynx?

Answer 15

the two veli palatini muscles

Question 16

which muscles act to shorten and widen the pharynx?

Answer 16

the longitudinal pharyngeal muscles

Question 17

which muscles close the larynx?

Answer 17

suprahyoid muscles elevate hyoid bone to do this

Question 18

how is the bolus then propelled into oesophagus?

Answer 18

constrictor muscles

Question 19

Name the 3 divisions of the larynx

Answer 19

naso-
oro-
laryngopharynx

Question 20

Describe the sensory innervation of the larynx segemnts

Answer 20

naso - CN V2
oro - CN IX
Lryno - X

Question 21

Describe the GSaffernt pathway in the larynx for CN iX and X

Answer 21

CN IX will travel to principle sensory nucleus of trigeminal and spinal nucleus of trigemical before instantly decusatiing through the medial lemniscus pathway to thalamus

Question 22

Describe GVA of CN IX and X

Answer 22

Carry info to Solitary nucleus

Question 23

is solitary nucleus affernt or effernt?

Answer 23

Afferent

Question 24

describe the Effernt pathways of larynx of CN IX and X

Answer 24

synapse in ambiguus and decussate via corticonuclear tract

Question 25

Where does oesphagus begin and end?

Answer 25

C6 @ cricoid cartilage | T11 ends

Question 26

name the arteries branching from ext carotid to vascularise pharynx

Answer 26

Facial, maxillary, inferior laryngeal

Question 27

Which other artery that doesnt branch from common carotid vascularise larynx?

Answer 27

Inferior laryngeal artery, branches from thryocervical.

Question 28

what are valleculae?

Answer 28

mucosal puches found either side of midline between base of tongue and epiglottus

Question 29

Whats the piriform recess?

Answer 29

channel between aryeppiglotic fold and thyroid cartilage allows food and liquids to travel from oral cavity to oesophagus

Question 30

descrube venous drainage of larynx

Answer 30

pharyngeal venous plexus -> int jugular.

Question 31

Which longitudinal Mm, opens eustacian tube when yawning? and what does its name mean?

Answer 31

Salpingopharyngeous Salipin - trumpet