D15 - Cranial nerve VII.

Question 1

VII

Name the cranial nerve VII

Answer 1

N. facialis

IX: N. glossopharyngeus

Question 2

VII

Where does the nerve arise?

Where does the nerve travel?

Answer 2

• Two separate nuclei in the medulla oblongata:
  
  • Motor nucleus located rostral
  • Parasympathetic nucleus located caudal to the motor nucleus
• Nuclei:
  
  • Nucl. n. facialis → somatomotor
  • Nucl. salviatorius rostralis → secretomotor
  • Nucl. tractus spinalis n. trigemini → somatosensory
  • Nucl. tractus solitarii → special sensory
• These two nuclei unite to form the roots of the n. facialis and joined by sensory fibers from ggl. geniculate
• Travels in the canalis facialis

Question 3

VII

Give the branches of the nerve in canalis facialis

Answer 3

Question 4

VII

Which foramen does the nerve travel through?

Answer 4

For. stylomastoideum

Only composed of motorfibers after

Question 5

VII

Draw n. facialis

Answer 5

Question 6

VII

Give the branches after leaving for. stylomastoideum

Answer 6