The Shoulder Flashcards
Flexor
Deltoid
origin:
distal 1/3 of clavicle
insertions:
deltoid tuberosity
Flexor
pectoralis major
origin:
proximal 1/3 of clavicle
insertions:
lateral lip of intertubercular groove
Flexor
coracobrachialis
origin:
coracoid process
insertions:
medial side of humeral diaphysis
Flexor
biceps brachii
origin:
coracoid process
insertions:
radial tuberosity
Extensor
posterior deltoid
origin:
acromion
insertions:
deltoid tuberosity
Extensor
triceps brachii
origin:
infraglenoid fossa
insertions:
olecranon
Abductor
supraspinatus
origin:
supraspinous fossa
insertions:
humeral greater tuberosity
Abductor
posterior deltoid
origin:
acromion
insertions:
deltoid tuberosity
Adductor
latissimus dorsi
origin:
spinous processes of T7-L5, posterior sacrum, iliac spine, & posterior side of ribs 10-12
insertion:
anteromedial side of humerus just inferior to intertubercular groove
Adductor
teres major
origin:
inferior angle of scapula
insertions:
medial lip of intertubercular groove
External Rotator
Infraspinatus
origin:
infraspinous fossa
insertions:
greater tuberosity of humerus
External Rotator
teres minor
origin:
lateral border of scapula
insertions:
greater tuberosity of humerus
Internal Rotator
subscapularis
origin:
subscapular fossa
insertions:
lesser tuberosity of the humerus
Internal Rotator
teres major
origin:
inferior angle of scapula
insertions:
medial lip of intertubercular groove
Horizontal Adductors
pectoralis major
origin:
proximal 1/3 of clavicle, lateral side of sternum & costal cartilage of ribs 1-6
insertions:
lateral lip of intertubercular groove
