Brainstem and Cranial nerves (CN I, II and XI)

Question 1

CN II

what fibres are in CN II and were do they supply

Answer 1

• special sensory fibres associated with sight that supply the visual cortex

Question 1

CN I

what fibres are in CN I and were do they supply

Answer 1

special sensory fibres associated with smell that supply the olfactory cortex

Question 2

CN XI (accessory)

where does the CN XI originate from

Answer 2

• cervical spinal cord (C1-5)

Question 3

CN XI

what fibre type is CN XI and what does it supply

Answer 3

• voluntary somatic motor fibres
• supplies sternocleidomastoid and trapezius muscles

Question 4

Which cranial nerves do not have their nuclei in the brainstem

Answer 4

CNs I, II and XI

Question 5

Describe the anatomical position of the brainstem in relation to these structures in the brain:

Answer 5

• cerebrum (deep)
  -diencephalon ( caudal )
• spinal cord ( superior)