NEUROANATOMY - Muscles

Question 1

What are the muscles of facial expression?

Answer 1

TEMPORAL branches
- Frontalis
- Orbicularis Oculi
- Corrugator Supercilii

ZYGOMATIC branches
- orbicularis oculi

BUCCAL branches
- Orbicularis oculi
- Buccinator
- Zygomaticus

MARGINAL MANDIBULAR branches
- Mentalis
- Depressor muscles

CERVICAL branches
Platysma

Question 2

Where do the muscles of facial expression arise from? Supplied by?

Where do muscles of mastication arise from? Supplied by?

Answer 2

facial expression - second pharyngeal arch supplied by facial nerve

mastication - first pharyngeal arch
supplied by V3 - trigeminal nerve