General Anatomy- muscles of the shoulder girdle Flashcards
What is the blood supply of the supraspinatus and infraspinatus?
suprascapular
What are the Rotator Cuff muscles? (SITS)
Supraspinatus, Infraspinatus, Teres Minor, and Subscapularis
What is the blood supply of Teres Minor?
Scapular circumflex
What is the blood supply for the subscapularis?
Lateral thoracic and subscapular
What is the nerve supply for supraspinatus and infraspinatus?
suprascapular
What is the nerve supply for Teres Minor?
axillary
What is the nerve supply for subscapularis?
subscapular
What are the actions of the SITS muscles (the CHEER)?
Abduction for supraspinatus, external (lateral) rotation for infraspinatus and teres minor and internal (medial) rotation for subscapularis
What is the origin/insertion for supraspinatus and infraspinatus?
fossa of scapula/ GREATER tubercle of humerus
What is the origin/insertion for Teres Minor?
Lateral border dorsal scapula/ GREATER tubercle of humerus
What is the origin/insertion of Subscapularis?
subscapular fossa of scapula/ LESSER tubercle of humerus
What are other muscles of the shoulder girdle?
latissimus dorsi, trapezius, rhomboid, SERRATUS ANTERIOR, deltoid, teres major, and pectoralis minor
What is the blood supply of the other shoulder girdle muscles?
descending scapular
What is the nerve supply for the latissimus dorsi?
thoracodorsal
What is the nerve supply of the trapezius muscle?
Spinal accessory
What is the nerve supply of the Romboid muscle?
dorsal scapular
What is the nerve supply of the serratus anterior (SALT) muscle?
long thoracic
What is the nerve supply of the deltoid muscle?
axillary
What is the nerve supply of the Teres Major muscle?
subscapular
What is the nerve supply of the pectoralis minor muscle?
median pectoral nerve
What is the action of latissimus dorsi?
extension and internal rotation of the arm
What is the action of the trapezius?
adduct scapula
What is the action of rhomboids?
scapular retraction
What is the action of serratus anterior?
adheres scapula to chest wall
