Role of Facial Muscles in Human Physiology

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Where are facial muscles located?

In the superficial fascia of the face (correct)

Attached to hair follicles

Embedded in the bones of the skull

In the masticatory muscles

What differentiates facial muscles from masticatory muscles?

Attachment to hair follicles

Location in the face

Origin from bones of the skull

Insertion point (into skin or other facial muscles) (correct)

How does lymph drainage from the forehead and anterior part of the face occur?

Parotid lymph nodes

Submental lymph nodes

Buccal lymph nodes

Submandibular lymph nodes (correct)

What is the drainage pathway for lymph from the lateral parts of the eyelids?

Parotid lymph nodes Signup and view all the answers

What can result from a thrombosis of the facial vein in the danger triangle of the face?

Cavernous sinus thrombosis Signup and view all the answers

Where do facial muscles typically arise from?

Bones of the skull Signup and view all the answers

What is the primary biological role of the facial muscles?

Regulate the facial orifices Signup and view all the answers

Which nerve supplies the facial muscles?

Facial nerve Signup and view all the answers

What is the secondary by-product of the fine control of facial orifices?

Facial expressions Signup and view all the answers

Which muscle is considered the sphincter muscle of the eyelids?

Orbicularis oculi Signup and view all the answers

What is the role of auricular muscles in humans?

Operate the external ear Signup and view all the answers

Which muscle elevates the upper eyelid but is generally considered an extraocular muscle?

Levator palpebrae superioris Signup and view all the answers

What is the significance of compression action in suckling in neonates?

Aids in producing sucking Signup and view all the answers

What can damage to the facial nerve in the internal acoustic meatus result in?

Distortion of the face Signup and view all the answers

What is a characteristic sequelae of damage to the facial nerve causing facial muscle paralysis?

Expressionless, masklike side of the face Signup and view all the answers

What type of lesion is indicated by inability to close the eyelids and drooping of the lower eyelid?

Lower motor neuron lesion Signup and view all the answers

What happens when there is involvement of the pyramidal tracts related to the facial nerve?

Normal upper part of the face Signup and view all the answers

Where does the facial nerve divide into its five terminal branches?

Substance of the parotid salivary gland Signup and view all the answers