PECTORAL MUSCLES
Large chest muscle inserting into lateral lip of bicipital groove
What is pectoralis major?
Nerve supplying deltoid
What is the axillary nerve?
Four rotator cuff muscles
What are supraspinatus, infraspinatus, teres minor, and subscapularis?
Muscle responsible for medial rotation of arm
What is subscapularis?
Injury causing winged scapula
What is long thoracic nerve injury?
Muscle attaching ribs 3–5 to coracoid process
What is pectoralis minor?
Muscle responsible for shoulder abduction
What is the middle deltoid?
Muscle initiating first 15° of abduction
What is supraspinatus?
Muscle assisting in arm adduction
What is pectoralis major?
Most commonly torn rotator cuff muscle
What is supraspinatus?
Muscle that depresses the clavicle
What is subclavius?
Origin of anterior deltoid
What is the lateral third of clavicle?
Muscle inserting on lesser tubercle
What is subscapularis?
Muscle that prevents winged scapula
What is serratus anterior?
Condition caused by compression under acromion
What is impingement syndrome?
“Boxer’s muscle”
What is serratus anterior?
Insertion of deltoid
What is the deltoid tuberosity?
Muscle responsible for lateral rotation
What is infraspinatus?
Muscle compressing humeral head during motion
What are rotator cuff muscles?
Fracture commonly injuring axillary nerve
What is surgical neck fracture?
Nerve supplying serratus anterior
What is the long thoracic nerve?
Clinical sign of axillary nerve injury
What is loss of shoulder abduction?
Primary function of rotator cuff
What is stabilizing the humeral head in the glenoid cavity?
Movement lost in axillary nerve injury
What is shoulder abduction?
Deformity caused by serratus anterior paralysis
What is medial border of scapula protrusion (winged scapula)?