18 Questions
Where are facial muscles located?
In the superficial fascia of the face
What differentiates facial muscles from masticatory muscles?
Insertion point (into skin or other facial muscles)
How does lymph drainage from the forehead and anterior part of the face occur?
Submandibular lymph nodes
What is the drainage pathway for lymph from the lateral parts of the eyelids?
Parotid lymph nodes
What can result from a thrombosis of the facial vein in the danger triangle of the face?
Cavernous sinus thrombosis
Where do facial muscles typically arise from?
Bones of the skull
What is the primary biological role of the facial muscles?
Regulate the facial orifices
Which nerve supplies the facial muscles?
Facial nerve
What is the secondary by-product of the fine control of facial orifices?
Facial expressions
Which muscle is considered the sphincter muscle of the eyelids?
Orbicularis oculi
What is the role of auricular muscles in humans?
Operate the external ear
Which muscle elevates the upper eyelid but is generally considered an extraocular muscle?
Levator palpebrae superioris
What is the significance of compression action in suckling in neonates?
Aids in producing sucking
What can damage to the facial nerve in the internal acoustic meatus result in?
Distortion of the face
What is a characteristic sequelae of damage to the facial nerve causing facial muscle paralysis?
Expressionless, masklike side of the face
What type of lesion is indicated by inability to close the eyelids and drooping of the lower eyelid?
Lower motor neuron lesion
What happens when there is involvement of the pyramidal tracts related to the facial nerve?
Normal upper part of the face
Where does the facial nerve divide into its five terminal branches?
Substance of the parotid salivary gland
Explore the primary biological role of the facial muscles in regulating facial orifices and their connection to vision, olfaction, respiration, feeding, speech, and hearing. Understand how facial expressions are a secondary outcome of fine control over facial orifices.
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