Orofacial Ch 28 Noteshttps://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
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1
Orofacial Ch 28 Notes
Origin
Generally the end of the muscle attached to the least movable structure.
(more fixed)
Insertion
The end of the muscle attached to the more movable structure. (more
movable)
Action
Work that is accomplished when the muscle fibers contract.
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
, Orofacial Ch 28 Noteshttps://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
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2
Orofacial Ch 28 Notes
In general, the _________ moves toward the _________ when a muscle is
contracted.
Insertion; origin
What are the muscles of mastication? (List them)
Masseter
Temporal / temporalis
Medial pterygoid
Lateral pterygoid
The muscles of mastication primarily are responsible for what movements?
Elevating the mandible, protruding & retruding the mandible, and moving
the mandible laterally
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
1
Orofacial Ch 28 Notes
Origin
Generally the end of the muscle attached to the least movable structure.
(more fixed)
Insertion
The end of the muscle attached to the more movable structure. (more
movable)
Action
Work that is accomplished when the muscle fibers contract.
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
, Orofacial Ch 28 Noteshttps://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
2
Orofacial Ch 28 Notes
In general, the _________ moves toward the _________ when a muscle is
contracted.
Insertion; origin
What are the muscles of mastication? (List them)
Masseter
Temporal / temporalis
Medial pterygoid
Lateral pterygoid
The muscles of mastication primarily are responsible for what movements?
Elevating the mandible, protruding & retruding the mandible, and moving
the mandible laterally
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
https://www.stuvia.com/user/filwe1099salmin
