Cranial nerve VII

The video tutorial explains cranial nerve #7, also known as the facial nerve, and its three main branches: the facial nerve proper, Corda Tympani, and the greater petrosal nerve. The facial nerve proper is responsible for muscles of facial expression, while the Corda Tympani handles taste from the tongue and salivary gland function. The greater petrosal nerve is involved in tear production and nasal gland function. The tutorial also highlights the pathways and functions of these branches, emphasizing their clinical relevance.

Which of the following is NOT a branch of cranial nerve #7?

• Corda tympani

• Greater petrosal nerve

• Trigeminal nerve

• Facial nerve proper

Through which opening does the facial nerve proper exit the skull?

• Stylomastoid foramen

• Optic canal

• Foramen magnum

• Jugular foramen

Which muscle is NOT innervated by the facial nerve proper?

• Zygomaticus major

• Frontalis

• Orbicularis oculi

• Masseter

What is the primary function of the Corda tympani branch?

• Innervating the lacrimal gland

• Innervating the parotid gland

• Providing taste sensation to the anterior 2/3 of the tongue

• Controlling muscles of facial expression

Which nerve does the Corda tympani hitchhike along to reach the tongue?

• V3

• VII

• V1

• V2

What is the role of the greater petrosal nerve?

• Controlling muscles of mastication

• Innervating the parotid gland

• Causing tear production

• Providing taste sensation to the posterior 1/3 of the tongue

Which gland is NOT innervated by cranial nerve #7?

• Lacrimal gland

• Submandibular gland

• Sublingual gland

• Parotid gland