Scapulohumeral (Intrinsic Shoulder) Muscles Flashcards
Deltoid - P
lateral third of clavicle, acromion and spine of scapula
Deltoid - D
deltiod tuberosity of humerus
Deltoid - N
axillary nerve
Deltoid (anterior) - A
shoulder flexion
shoulder medial rotation
Deltoid (middle) - A
shoulder ABduction
Deltoid (posterior) - A
shoulder extension
shoulder lateral rotation
Supraspinatus - P
supraspinous fossa of scapula
Supraspinatus - D
superior facet of greater tubercle of humerus
Supraspinatus - N
suprascapular nerve
Supraspinatus - A
initiates and assists deltoid in shoulder ABduction
no ER
Infraspinatus - P
infraspinous fossa of scapula
Infraspinatus - D
middle facet of greater tubercle of humerus
Infraspinatus - N
suprascapular nerve
Infraspinatus - A
shoulder lateral rotation
helps hold humerus in glenoid cavity of scapula
Teres minor - P
middle part of lateral border of scapula
Teres minor - D
inferior facet of greater tubercle of humerus
Teres minor - N
axillary nerve
Teres minor - A
shoulder lateral rotation
helps hold humerus in glenoid cavity of scapula.
Teres major - P
inferior part of lateral border of scapula and posterior surface of inferior angle of scapula
Teres major - D
medial lip of intertubercular sulcus of humerus
distal to RC muscles
Teres major - N
subscapular nerve
Teres major - A
shoulder adduction
shoulder medial rotation
Subscapularis - P
subscapular fossa (most of anterior surface of scapula)
Subscapularis - D
lesser tubercle of humerus
Subscapularis - N
subscapular nerve
Subscapularis - A
shoulder adduction
shoulder medial rotation
helps hold humerus in glenoid cavity of scapula
