Cranial nerves mnemonic

Predominant function of each cranial nerve (S = sensory, M = motor, B = both)

The mnemonic

Some Say Marry Money, But My Brother Says Big Brains Matter More

What each word stands for

  • SomeI Olfactory — sensory
  • SayII Optic — sensory
  • MarryIII Oculomotor — motor
  • MoneyIV Trochlear — motor
  • ButV Trigeminal — both
  • MyVI Abducens — motor
  • BrotherVII Facial — both
  • SaysVIII Vestibulocochlear — sensory
  • BigIX Glossopharyngeal — both
  • BrainsX Vagus — both
  • MatterXI Accessory — motor
  • MoreXII Hypoglossal — motor

Why it matters clinically

Useful for localising lesions: a purely motor deficit in the orbit points to III, IV or VI.

Where it stops being reliable

Classifies the dominant function only. Autonomic and special-sense components are not captured, and some sources classify nerve fibres differently.

Teaching aid, still awaiting independent review. Confirm facts in a standard source.

More mnemonics

Common questions

What is the Cranial nerves mnemonic?

Some Say Marry Money, But My Brother Says Big Brains Matter More. It helps you recall: Predominant function of each cranial nerve (S = sensory, M = motor, B = both).

What does "Some" stand for?

I Olfactory — sensory

What does "Say" stand for?

II Optic — sensory

What does "Marry" stand for?

III Oculomotor — motor

What are all the parts of the Some Say Marry Money, But My Brother Says Big Brains Matter More mnemonic?

Some: I Olfactory — sensory; Say: II Optic — sensory; Marry: III Oculomotor — motor; Money: IV Trochlear — motor; But: V Trigeminal — both; My: VI Abducens — motor; Brother: VII Facial — both; Says: VIII Vestibulocochlear — sensory; Big: IX Glossopharyngeal — both; Brains: X Vagus — both; Matter: XI Accessory — motor; More: XII Hypoglossal — motor.

Which topic does this mnemonic belong to?

It belongs to Cranial nerves in Anatomy.

Where does this mnemonic stop being reliable?

Classifies the dominant function only. Autonomic and special-sense components are not captured, and some sources classify nerve fibres differently.

How is this useful clinically?

Useful for localising lesions: a purely motor deficit in the orbit points to III, IV or VI.

How do I make this mnemonic stick?

Say it aloud, write it from memory tomorrow, then again in a week. Then test yourself on a Anatomy question about Cranial nerves.

Is this a standard mnemonic?

It is a teaching aid written or adapted by our team. Some resemble ones students share informally. Check any fact that matters in a standard source.