How do you find the marginal mandibular nerve?

The marginal mandibular nerve is shown as it exits the anterior border of the parotid gland. The nerve courses anteriorly over the facial artery and vein at the inferior border of the mandible.

What is the marginal mandibular nerve?

Marginal mandibular nerve is a terminal branch of the extracranial part of the facial nerve and leaves the parotid from its antero-inferior border and travels beneath the platysma muscle and deep cervical neck fascia, after which its course becomes superficial to the facial vessels.

How many branches of marginal mandibular nerve are there?

The marginal mandibular branch of the facial nerve (MMB) emerging as three main separate branches (a, b, and c) from the lower part of the anterior border of the parotid gland (PG).

How deep is the marginal mandibular nerve?

The marginal mandibular branch of the facial nerve travels deep to the platysma and superficial to the facial vein. It may be located up to 2 cm below the inferior border of the mandible posterior to the anterior border of the masseter. Anterior to this point, the nerve is found superior to the inferior border.

What is the submandibular triangle?

The submandibular triangle, also known as the digastric triangle, is bounded anteriorly by the anterior belly of the digastric muscle, posteriorly by the posterior belly of the digastric muscle, superiorly by the mandible, and inferiorly by the mylohyoid and hypoglossus muscles.

What is Auriculotemporal nerve?

The auriculotemporal nerve is a tributary of the mandibular division of cranial nerve five, the trigeminal nerve. It contains sensory, vasomotor, and parasympathetic fibers.

Which muscles does marginal mandibular nerve supply?

The marginal mandibular nerve supplies the depressor anguli oris, depressor labii inferioris and mentalis muscles.

What is the Wharton’s duct?

Wharton’s duct is a thin tube, about 5 cm in length, and an essential carrier of your saliva. Each submandibular duct begins at the right and left sides of the mouth. The submandibular duct openings are underneath the tongue. These openings that empty into the oral cavity are also known as sublingual caruncles.

Where is the submaxillary triangle located?

The submandibular triangle (or submaxillary or digastric triangle) corresponds to the region of the neck immediately beneath the body of the mandible.

Where is the auriculotemporal nerve located?

The nerve fibers can be located in the posterior superficial aspect of the muscle. The ear. The auriculotemporal nerve fibers can be reached at the external auditory canal, the tragus and the anterior part of the auricle.

What is masseteric nerve?

The masseteric nerve is a nerve of the face. It is a branch of the mandibular nerve (V3). It crosses the mandibular notch to reach masseter muscle. It supplies the masseter muscle, and gives sensation to the temporomandibular joint.

The marginal mandibular nerve courses over the facial artery in the region of the mandible. The nerve is most susceptible to injury in this location because it lies superficial to the anterior facial artery.

How are landmarks identified on the inferior border of the mandible?

At complete exposure of the nerve, 5 anatomic landmarks on the inferior border of the mandible were identified and labeled. The distance between the MMN and these landmarks was recorded, and the average measurements were used to approximate the most common pathway of the MMN.

Are marginal mandibular nerve injuries following facelift procedures symptomatic?

Background: Marginal mandibular nerve injuries are more likely to be symptomatic than other facial nerve injuries following facelift procedures. The marginal mandibular nerve courses over the facial artery in the region of the mandible.