Facial nerve and facial muscles

The video tutorial explains the innervation of facial expression muscles by the facial nerve (cranial nerve VII). It details the nerve's origin in the pons, its pathway through the internal acoustic meatus, and its exit via the stylomastoid foramen. The tutorial describes the five branches of the facial nerve—temporal, zygomatic, buccal, mandibular, and cervical—and uses the mnemonic 'To Zanzibar By Motor Car' for memorization. It highlights the nerve's role in eye closure, taste, and glandular functions, excluding the parotid gland, which is innervated by cranial nerve IX. The video concludes with acknowledgments for visual aids.

Which cranial nerve is responsible for the innervation of the muscles of facial expression?

• Cranial nerve V

• Cranial nerve VII

• Cranial nerve IX

• Cranial nerve X

What is the mnemonic used to remember the branches of the facial nerve?

• To Zaire By Motor Cart

• To Zanzibar By Motor Car

• To Zimbabwe By Motor Cycle

• To Zambia By Motor Coach

Which branch of the facial nerve is NOT part of the mnemonic 'To Zanzibar By Motor Car'?

• Ophthalmic

• Zygomatic

• Temporal

• Buccal

What function is NOT associated with the facial nerve?

• Crying

• Tasting

• Innervating the parotid gland

• Closing the eye

Which cranial nerve provides parasympathetic innervation to the parotid gland?

• Cranial nerve X

• Cranial nerve VII

• Cranial nerve VIII

• Cranial nerve IX