Muscles Of The Head That Produce Facial Expression Flashcards
(14 cards)
Occipitofrontalis
Scalp muscle
O- Galea Aponeurotica (both)
I- Frontalis: Skin superior to eyebrows
Occipitalis: Superior Nuchal line
A- Frontalis: Raise eyebrows & Wrinkle Forehead
Occipitalis: Anchor & Retract Galea Posteriorly
N- Facial [ VII]
Obicularis oris
Mouth muscle
O- Muscle fibers surrounding opening of mouth
I-Skin at corner of mouth
A-Closes and protrudes lips [as in kissing]
Compresses lips against teeth
Shapes lips during speech
N-
Zygomaticus major
Mouth muscle
O-Zygomatic bone
I-Skin at angle of mouth & obicularis oris
A-Draws angle of mouth superiorly and laterally [as in smiling]
N-
Zygomaticus minor
Mouth muscle
O-Zygomatic bone
I-Upper lip
A-Raises [elevates] upper lip, exposing maxillary [upper] teeth
N-
Levator labii Superioris
Mouth muscle
O-Superior to infraorbital foramen of maxilla
I-Skin at angle of mouth & obicularis oris
A-Raises upper lip
N-
Depressor labii inferioris
Mouth muscle
O-Mandible
I-Skin of lower lip
A-Depresses [Lowers] lower lip
N-
Depressor anguli oris
Mouth muscle
O-Mandible
I-Angle of mouth
A-Draws angle of mouth laterally and inferiorly, as an opening mouth
N-
Levator anguli oris
O-Inferior to infraorbital foramen
I-Skin of lower lip and orbicularis Oris
A-Draws angle of mouth laterally and superiorly
N-
Buccinator
Mouth muscle
Alveolar processes of maxilla and mandible and pterygomandibular raphe [Fibrous band extending from pterygoid process of sphenoid bone to mandible]
I-obicularis oris
A-Presses cheeks against the teeth and lips, [whistling, blowing, and sucking]
Draws corner of mouth laterally; assists in mastication [Chewing] by keeping food between the teeth [and not between teeth and cheeks]
N-
Risorius
Mouth muscle
O-Fascia over parotid gland [Salivary]
I-Skin at angle of mouth
A-Draws angle of mouth laterally, as in grimacing
N-
Mentalis
Mouth muscle
O-Mandible
I-Skin of chin
A-Elevates and protrudes lower lip and pulls skin of chin up, as in pouting
N-
Platysma
Neck muscle
O-Fascia Covering superior part of pectoralis major
I-Base of mandible, skin of lower part of face
A-Assist to depress the mandible [temporomandibular joint]
Tighten the fascia of the neck
Draw down corner of the mouth
N-Facial [ VII]
Obicularis oculi
Orbit and eyebrow muscle
O-Medial wall of orbit
I-Circular path around orbit
A-Closes eye
N-
Corrugator supercilii
Orbit and eyebrow muscle
O-Medial end of superciliary arch of frontal bone
I-Skin of eyebrow
A-Draws eyebrow inferiorly and wrinkles skin of forehead vertically as in frowning
N-
