Facial Nerve Anatomy

What type of nerve fibers are indicated in section (a) of the diagram?

In the diagram, section (b) illustrates motor branches of the facial nerve that innervate muscles responsible for what primary function?

If a patient loses the ability to produce tears, which part of the facial nerve might be affected based on the diagram?

A patient reports a loss of taste sensation on the anterior two-thirds of their tongue. Which aspect of the facial nerve is most likely compromised?

Based on the diagram, which function would remain intact if only the motor branches to muscles of facial expression and scalp muscles were damaged?

Damage to which nerve branch would MOST directly impair the ability to wrinkle the forehead?

Bell's palsy, characterized by facial paralysis, typically results from dysfunction of which cranial nerve?

Which of the following is NOT a potential consequence of damage to the facial nerve?

A lesion affecting parasympathetic efferents of the facial nerve would MOST likely result in:

Damage to the chorda tympani nerve, a branch of the facial nerve, would primarily affect which two functions?

If a patient is unable to close their mouth properly or purse their lips, which branch of the facial nerve is MOST likely affected?

A stroke affecting the motor cortex can lead to weakness in facial muscles. How would this presentation typically differ from Bell’s palsy, which also causes facial weakness?

During a physical exam, you ask a patient to smile. You notice that only one side of their mouth elevates. This suggests an issue with:

Which diagnostic test would be MOST useful in determining the extent of damage to the facial nerve following a traumatic injury?

A patient with damage to the facial nerve is experiencing excessive dryness of the eye. Which of the following interventions would be MOST appropriate?

If a patient has difficulty whistling, which facial nerve branch is likely affected?

Lesions to the facial nerve as it passes through the middle ear can affect both taste and hearing. Which structure is MOST likely damaged along with the nerve?

A patient presents with an inability to close their eye completely, leading to corneal dryness. Which of the following muscles is MOST likely affected?

Which of the following nerves provides sensory innervation to the skin over the parotid gland, an area closely related to the facial nerve's path?

Following a surgical procedure near the parotid gland, a patient notices that saliva is dripping from the corner of their mouth. Which branch of the facial nerve was MOST likely injured?