Muscles of Facial Expression Flashcards
Is the origin or the insertion fixed?
origin
The origin is usually more…
Proximal and medial
Lateral and medial
proximal and medial
Origin is usually a Skeletal or muscle attachment?
skeletal attachment
Insertions can be via ligament to
bone or subcutaneous tissue and skin
All muscles of facial expression are innervated by the motor branches of what nerve
facial nerve CN VII
O: anterior belly
I: galea aponeurotica
A: raises the eyebrows and wrinkles the forehead
frontalis
CN: frontalis
temporal branch of CN VII
A: draws eyebrows down and medially
corrugator supercilli
A: produces vertical wrinkled on the forhead
corrugator supercilli
corrugator supercilli helps with what facial expression?
frowning
CN: corrugator supercilli
temporal branch of VII
A: Draws down the median angle of the eyebrow
Procerus
A: Produces horizontal wrinkles over bridge of nose
Procerus
CN: temporal branch of CN VII
Procerus, Frontalis, Corrugator supercilli
CN: procerus
CN VII
Muscle that goes around the orbit of the eye
Orbital part of Orbicularis Oculi
Muscle forms the fleshy eyelid
palpebral part of Orbicularis Oculi
A: forceful closure of eye
Orbital part of orbicularis oculi
A: Reflex blinking of eye
Palpebral part of orbicularis oculi