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The following facial muscles are innervated by cranial nerve VII (facial nerve):
- orbicularis oris (closes lips)
- caninus (snarling in a dog)
- levator nasolabialis (lifts nose and upper lip)
- levator labii superioris (lifts upper lip)
- depressor labii inferioris (depresses lower lip)
- caudal belly of the digastricus (opens jaw)
Levator palpebrae superioris which is innervated by the oculomotor nerve. This muscle elevates the upper eyelids and opens the eye.
Most are innervated by CN 7 (facial nerve). IF you include eye movements, you must add CN's III (oculomotor) IV (Trochlear) and VI (abducens)
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What is the nerve supply of the muscles of facial expression?
The muscles of facial expression are innervated by the facial nerve (cranial nerve VII). This nerve originates in the brainstem and branches out to supply the muscles involved in facial expressions, such as the orbicularis oculi, zygomaticus, and frontalis muscles. Damage to the facial nerve can result in facial muscle weakness or paralysis on the affected side of the face.
Is the orbicularis oculi muscle innervated by the facial nerve?
Yes
What is an example of a muscle of facial expression?
lanax
What facial expression does the corrugator muscle make?
frown
Muscle inserts into the mastoid process?
Posterior Belly of Digastric Muscle (innervated by CN VII) Facial nerve Sternocleidomastoid (innervated by CN XI) Spinal accessory nerve Longissimus Capitis (innervated by dorsal rami of C3-C8 spinal nerves) Splenius Capitis (innervated by dorsal rami of middle cervical spinal nerves)
Which facial expression muscle acts to elevate the upper lip?
Levator labii superioris
Which principal Muscle is used in compression of cheek?
The muscle that resides in the cheek is names the buccinator and is innervated by the facial nerve. It is primarily a muscle of facial expression. Its function in mastication (chewing) is to push the food, with the aid of the tongue, to the opposite side of the mouth. It is, however, only able to form part of the inward movement of the cheeks; the rest is caused by negative pressure (semi-vacuum) being created by the action of the inferior tongue muscles pulling the tongue down and back.
What is a caninus muscle?
A caninus muscle is a a facial muscle of the mouth
What facial muscle is grimacing?
THe buccinator
What muscle that has the letter z?
zygomaticus major muscle (a facial muscle)
Which condition is characterized by fine muscle tremors a mask like facial expression and a shuffing galt?
Parkinson's disease
What is the name of a facial muscle that raises the eyebrow?
The Frontalis muscle .
