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Muscles: Origins, Insertions, Actions
Origins, insertions, and actions of various muscles of the human body
4
Anatomy
Undergraduate 2
04/16/2010

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Term

Sternocleidomastoid

Pg 349

Definition

Origin: Sternum & clavicle

Insertion: Mastoid process

Action: Flex and extend head

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Term

Deltoid

Pg 352

Definition

Origin: Acromion of scapula & clavicle

Insertion: Deltoid tuberosity of humerus

Action: Abduct the arm

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Term

Pectoralis Major

Pg 352

Definition

Origin: Clavicle, Sternum, and Costal Cartilage 2-6

Insertion: Greater Tubercle of Humerus

Action: Adducts and medially rotate arm

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