CN V: Cranial Nerve Pathways

Question 1

Discuss the organization of the sensory and motor trigeminal nuclei in the brainstem

Answer 1

a

Question 2

Compare and contrast how nociceptive, proprioceptive and tactile information from the face are centrally processed

Answer 2

a

Question 3

Describe thalamic and cortical mechanisms that produce somatic sensation in trigeminal dermatomes

Answer 3

a

Question 4

Understand the impact of pathway lesions on sensation in the face

Answer 4

a

Question 5

Afferent Supply

Answer 5

To face 
To the top of the head
To the eardrum
Anterior 2/3 of tongue (VII does taste!)
Proprioceptors for the jaw

• The teeth, cornea and eardrum are 3 regions
  where there is only pain sensation

Question 6

Efferent Motor Output

Answer 6

Muscles of mastication (derived from first branchial arch)

Tensor tympani