Lecture: Cranial Nerves Overview

Overview

• There are 12 cranial nerves.
• The lecture covers mnemonic devices for remembering their names and functions.

Mnemonic for Names

• Mnemonic Device: "Ooo-ooo-ooo, to touch and feel very good veggies are heavenly."
  • Olfactory
  • Optic
  • Oculomotor
  • Trochlear
  • Trigeminal
  • Abducens
  • Facial
  • Vestibulocochlear
  • Glossopharyngeal
  • Vagus
  • Accessory
  • Hypoglossal

Mnemonic for Functions

• Mnemonic Device: "Some say marry money, but my brother says big brains matter most."
  • Some (Sensory)
  • Say (Sensory)
  • Marry (Motor)
  • Money (Motor)
  • But (Both)
  • My (Motor)
  • Brother (Both)
  • Says (Sensory)
  • Big (Both)
  • Brains (Both)
  • Matter (Motor)
  • Most (Motor)

Detailed Breakdown

1. Olfactory (I)
   • Function: Sensory
   • Mnemonic: Some
2. Optic (II)
   • Function: Sensory
   • Mnemonic: Say
3. Oculomotor (III)
   • Function: Motor
   • Mnemonic: Marry
4. Trochlear (IV)
   • Function: Motor
   • Mnemonic: Money
   • Location: Above the pons
5. Trigeminal (V)
   • Function: Both
   • Mnemonic: But
   • Description: Three branches
6. Abducens (VI)
   • Function: Motor
   • Mnemonic: My
   • Function: Moves eyes laterally
7. Facial (VII)
   • Function: Both
   • Mnemonic: Brother
   • Function: Facial expressions, senses pain, pressure, touch
8. Vestibulocochlear (VIII)
   • Function: Sensory
   • Mnemonic: Says
   • Function: Hearing and balance
9. Glossopharyngeal (IX)
   • Function: Both
   • Mnemonic: Big
   • Function: Gag reflex
10. Vagus (X)
    • Function: Both
    • Mnemonic: Brains
11. Accessory (XI)
    • Function: Motor
    • Mnemonic: Matter
12. Hypoglossal (XII)
    • Function: Motor
    • Mnemonic: Most

Additional Tips

• Eye Movement Mnemonic: "Three, four, and six make my eyes do tricks."
  • Refers to Oculomotor, Trochlear, and Abducens controlling eye muscles.