Exam 2: Shoulder Girdle Flashcards
What is the origin of the subclavius?
1st Rib
What is the insertion of the subclavius?
Inferior middle surface of the clavicle
What is the action of the subclavius?
Depresses the clavicle, stabilizes and protects the SC joint, and slight protraction
What is the origin of the pectoralis minor?
Ribs 3-5
What is the insertion of the pectoralis minor?
Coracoid process of scapula
What is the action of the pectoralis minor?
Depression, downward rotation, and protraction
What is the origin of the serratus anterior?
Ribs 1-9
What is the insertion of the serratus anterior?
Entire anterior vertebral border of scapula
What is the action of the serratus anterior?
Protraction and upward rotation
What is the origin of the levator scapulae?
Transverse process of C1-C4
What is the insertion of the levator scapulae?
Upper portion of vertebral border of scapula from the superior angle of scapular spine
What is the action of the levator scapulae?
Elevation, assists in retraction and downward rotation
What is the origin of the rhomboids (major and minor)?
Spinous processes of C7-T5
What is the insertion of the rhomboids (major and minor)?
Vertebral border of scapula
What is the action of the rhomboids (major and minor)?
Retraction, downward rotation, and elevation