Unit 4 - Head and Neck: Muscles of Facial Expression - Forehead, Nose, and Ear (Ex. III) Flashcards Preview

Gross Anatomy '15 Ex. III > Unit 4 - Head and Neck: Muscles of Facial Expression - Forehead, Nose, and Ear (Ex. III) > Flashcards

Flashcards in Unit 4 - Head and Neck: Muscles of Facial Expression - Forehead, Nose, and Ear (Ex. III) Deck (2)
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1

orbicularis oculi
**palpebral fissure and nose**

O: M orbital margin; M palpebral ligament; lacrimal bone
I: skin around margin of orbit; S and I tarsal plates
Inn: facial n. (CN VII) **branch**
A: acts as orbital sphincter (closes eyelids) - palpebral portion gently closes and orbital portion tightly closes (winking)

2

frontal belly of occipitofrontalis
**calvaria**

O: epicranial aponeurosis
I: skin and subcutaneous tissue of eyebrows and forehead
Inn: facial n. (CN VII) **branch**
A: elevates eyebrows; wrinkles skin of forehead

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