Pectoralis Major and minor

Action of all fibers of Pectoralis Major
- adduct the shoulder
- medially rotate the shoulder
- Assist to elevate the thorax during forced inhalation with the arm fixed
origin of pectoralis major
- medial half of clavice
- sternum
- and cartlidge of 1-6 ribs
action of upper fibers of pectoralis major
- flex the shoulder
- horizontally adduct the shoulder
action of lower fibers of Pectoralis Major

extend the shoulder
insertion of pectoralis major

crest of greater tubercle of humerus
action of Pectoralis Minor
- Depress the scapula
- abduct the scapula
- downwardl rotate the scapula
- with the scapula fixed also assist to elevate the thorax during forced inhalation
origin of Pectoralis Minor

3-5 ribs
insertion of pectoralis minor

medial surface of coracoid process of the scapula

Author

jcandyj_80alba

149967

Card Set

Pectoralis Major and minor

Description

Pectoralis Major and Minor

Updated

2012-04-25T07:22:55Z

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