Facial Nerve and Innervation Overview

<p>Sphenoid sinus (C)</p> Signup and view all the answers

<p>Conductive hearing loss (C)</p> Signup and view all the answers

<p>Earwax impaction (B)</p> Signup and view all the answers

<p>Facial nerve (A)</p> Signup and view all the answers

<p>Orthognathic surgery (D)</p> Signup and view all the answers

<p>Facial Nerve (CN VII) (A)</p> Signup and view all the answers

<p>Only the lower facial muscles are affected on the contralateral side. (A)</p> Signup and view all the answers

<p>It transmits sensory information from the cornea. (D)</p> Signup and view all the answers

<p>Facial Nerve (CN VII) (C)</p> Signup and view all the answers

<p>Lateral rectus (D)</p> Signup and view all the answers

<p>Possible optic nerve damage (C)</p> Signup and view all the answers

<p>The process of focusing on objects at different distances. (C)</p> Signup and view all the answers

<p>Rapid and uncontrollable eye movements. (A)</p> Signup and view all the answers

<p>Sternocleidomastoid (D)</p> Signup and view all the answers

<p>Produces hormones that control metabolism (A)</p> Signup and view all the answers

<p>Cricothyrotomy (B)</p> Signup and view all the answers

<p>Surrounding the trachea (C)</p> Signup and view all the answers

<p>Often a clue to abdominal or thoracic malignancy (A)</p> Signup and view all the answers

<p>It is the only complete ring among the laryngeal cartilages (C)</p> Signup and view all the answers

<p>2nd and 3rd tracheal rings (D)</p> Signup and view all the answers

<p>Calcium levels in the blood (A)</p> Signup and view all the answers

<p>The condylar head moves anteriorly and superiorly and the patient cannot reposition their jaw (C)</p> Signup and view all the answers

<p>Crepitus during mandibular motion (D)</p> Signup and view all the answers

<p>A restricted range of motion in mouth opening (A)</p> Signup and view all the answers

<p>Abnormal fusion restricting mouth opening (D)</p> Signup and view all the answers

<p>Using a single finger to measure the gap (C)</p> Signup and view all the answers

<p>It deviates toward the affected side (B)</p> Signup and view all the answers

<p>One finger fits between the teeth (A)</p> Signup and view all the answers

<p>Inserting the little finger into the ear canal (D)</p> Signup and view all the answers

A static condition where the upper eyelid is higher than normal during downgaze.

The nerve responsible for taste sensation in the anterior two-thirds of the tongue.

The nerve responsible for taste sensation in the posterior one-third of the tongue and gag reflex.

Hearing loss caused by damage to the inner ear or auditory nerve.

Hearing loss caused by a problem in the outer or middle ear.

Controls tongue movement; paralysis causes tongue deviation to the weak side.

A sinus that cannot be examined clinically due to its deep location.

Cocaine causes vasoconstriction, leading to ischemia and necrosis of the cartilage, potentially causing septal perforation.

The facial nerve (CN VII) primarily controls facial expressions, innervating muscles of facial expression. The upper facial muscles receive bilateral innervation (from both hemispheres), while the lower face receives contralateral innervation (from opposite hemisphere).

The posterior belly of the digastric muscle is innervated by the facial nerve (CN VII).

The oculomotor nerve (CN III) controls most extraocular muscles responsible for eye movement, excluding the superior oblique and lateral rectus muscles.

UMN lesions affecting the facial nerve cause weakness or paralysis of the lower face on the contralateral side (opposite).

LMN lesions causing facial nerve issues affect the entire ipsilateral side of the face (same side) which includes both the upper and lower part of the face

Involves the trigeminal nerve (CN V) and the facial nerve (CN VII). This reflex protects the eye.

Involves three cranial nerves: the optic nerve (CN II), oculomotor nerve (CN III), and pretectal pathway in the midbrain.

Anterior 2/3 of the tongue - Facial nerve (CN VII); Posterior 1/3 of the tongue - Glossopharyngeal nerve (CN IX); epiglottis and pharynx - Vagus nerve (CN X).

The jawbone's condylar head moves too far forward and upward, beyond the articular eminence. A person can't reposition their jaw on their own.

The jawbone's condylar head also moves forward and upward, but the person can put their jaw back in place.

Creaking or grinding (crepitus) sound in the jaw joint during movement. Rare with myofascial pain syndrome (MPDS).

Limited ability to open mouth due to muscle spasms, inflammation, trauma, or fibrosis of chewing muscles.

Abnormal fusion or stiffening of the jawbone's condylar head to the skull, significantly restricting or preventing jaw opening.

Jaw moves to one side while opening, often towards the problematic side.

The distance between upper and lower front teeth during maximal mouth opening.

Pain or discomfort when touching the area around the TMJ.

The only complete ring-shaped cartilage in the larynx, located below the thyroid cartilage and above the trachea.

The membrane connecting the cricoid cartilage to the thyroid cartilage.

Cricothyrotomy is a quick emergency procedure to establish an airway by making an incision in the cricothyroid membrane.

Surgical removal of the cricoid cartilage, either partially or completely.

The 2nd and 3rd tracheal rings are considered the best location for a tracheostomy.

A swollen left supraclavicular lymph node, often indicating a potential abdominal or thoracic malignancy.

The thyroid gland is located in the neck, below the muscles and wrapping around the trachea near the cricoid cartilage.

Four small glands situated behind the thyroid gland.