advance swedish week 5 vocab. words Flashcards
0
Q
Pectoralis major
A
Origin: Medial half of the clavicle, sternum and cartilage of the first through sixth ribs.
Insertion: crest of the greater tubercle of humerus
Actions: all fibers: adduct the shoulder
Medially rotate the shoulder
Assist to elevate the thorax during forced inhalation (with the arm fixed)
Upper fibers: flex the shoulder
Horizontally adduct the shoulder
Lower fibers: extend the shoulder
1
Q
Pectoralis minor
A
Origin: Third, fourth, and fifth ribs
Insertion: medial surface of the coracoid process of the scapula
Action: depress the scapula
Abduct the scapula
Downwardly rotate the scapula
With the scapula fixed: assist to elevate the thorax during forced inhalation.