Unit 4 - Head and Neck: Muscles of Mastication - Pterygoid Muscles (Ex. III) Flashcards Preview

Gross Anatomy '15 Ex. III > Unit 4 - Head and Neck: Muscles of Mastication - Pterygoid Muscles (Ex. III) > Flashcards

Flashcards in Unit 4 - Head and Neck: Muscles of Mastication - Pterygoid Muscles (Ex. III) Deck (4)
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1

S head of L pterygoid

O: infratemporal crest of greater wing of sphenoid bone
I: articular disk of TMJ
Inn: mandibular n. (CN V3) via L pterygoid n.
A: bilaterally protrudes mandible by pulling articular disk forward; unilaterally moves mandible laterally (chewing)

2

I head of L pterygoid

O: L surface of L pterygoid plate
I: condylar process of mandible
Inn: mandibular n. (CN V3) via L pterygoid n.
A: bilaterally protrudes mandible by pulling articular disk forward; unilaterally moves mandible laterally (chewing)

3

superficial head of M pterygoid

O: tuberosity of maxilla
I: pterygoid tuberosity on M surface of mandibular angle
Inn: mandibular n. (CN V3) via M pterygoid n.
A: elevates mandible

4

deep head of M pterygoid

O: M surface of L pterygoid plate and pterygoid fossa
I: pterygoid tuberosity on M surface of mandibular angle
Inn: mandibular n. (CN V3) via M pterygoid n.
A: elevates mandible

Decks in Gross Anatomy '15 Ex. III Class (89):