1: Welcome to Dysphagia

Question 1

What does the Trigeminal CN mediate?

Answer 1

somatosensory (touch, pressure, vibration, proprioception) information from the external face and anterior 2/3 of the oral cavity

Question 2

Kinesthesia or proprioception? “My foot is in front of me”

Answer 2

proprioception

Question 3

Kinesthesia or proprioception: “I’m walking forwards”

Answer 3

kinesthesia

Question 4

What are the 3 branches of the trigeminal nerve?

Answer 4

V1) opthalmic
V2) maxillary
V3) mandibular

Question 5

What are 2 things that the trigeminal nerve transmits?

Answer 5

1) discriminative touch

2) pain and temperature (of oropharynx)

Question 6

What is discriminative touch between?

Answer 6

oral cavity, face, and ear canal

Question 7

The spinal trigeminal nucleus/tract also receives sensory information about pain and temperature from what CNs?

Answer 7

1) VII
2) IX
3) X
4) Pharyngeal Plexus (branches of IX and X)

Question 8

CN VII transmits sensory pain and temp information from what 3 locations?

Answer 8

1) external auditory meatus
2) tympanic membrane
3) pinna

Question 9

CN IX transmits sensory pain and temp information from what 4 locations?

Answer 9

1) posterior 1/3 of tongue
2) oropharynx
3) eustachian tube
4) middle ear

Question 10

Which CN triggers the pharyngeal swallow?

Answer 10

CN IX

Question 11

CN X transmits sensory pain and temp information from what 3 locations?

Answer 11

1) pharynx
2) larynx
3) esophagus

Question 12

Where is the pharyngeal plexus located?

Answer 12

mainly over the middle pharyngeal constrictor

Question 13

What is the pharyngeal plexus?

Answer 13

The main motor and sensory nerve supply to muscles of the pharynx and soft palate