Where It All Begins
This muscle has a proximal attachment on the external surfaces of lateral parts of the 1st-8th ribs
What is serratus anterior?
This muscle has a distal attachment on the medial border of the scapula superior to the root of the scapular spine
What is levator scapulae?
These muscles are innervated by the dorsal scapular nerve (C4, C5)
What are rhomboid major and rhomboid minor?
This muscle stabilizes the scapula by drawing it inferiorly and anteriorly against the thoracic wall
What is pectoralis minor?
These two structures pass through the quadrilateral space
What is the axillary nerve and the posterior circumflex humeral vessels?
This muscle has a proximal attachment on the distal half of the anterior surface of the humerus
What is brachialis?
This muscle has a distal attachment on the lateral lip of the intertubercular groove of the humerus
What is pectoralis major?
These muscles are innervated by the axillary nerve (C5, C6)
This muscle initiates and assists deltoid in abduction of arm and acts with other rotator cuff muscles
What is supraspinatus?
This structure is the lateral boundary of the triangular space
What is triceps long head?
This muscle has a proximal attachment on the distal quarter of the anterior surface of the ulna
What is pronator quadratus?
This muscle has a distal attachment on the middle facet of the greater tubercle of the humerus
What is infraspinatus?
This muscle is innervated by the lower subscapular nerve (C5, C6)
What is teres major?
This muscle medially rotates the arm and helps hold the head of the humerus in the glenoid cavity
What is subscapularis?
This occurs when there is a partial tear of the acromioclavicular ligament, but the coracoclaviculars are still attached
What is a grade 2 separated shoulder?
This muscle has a proximal attachment on the posterior surface of distal third of the ulna and interosseous membrane
What is extensor indicis?
This muscle has a distal attachment on the distal half of flexor retinaculum and the apex of palmar aponeurosis
What is palmaris longus?
This group of muscles is innervated by the musculocutaneous nerve (C5, C6, C7)
What are biceps brachii?
This muscles flexes and adducts the hand (at the wrist)
What is flexor carpi ulnaris?
This artery has clavicular, acromial, deltoid, and pectoral branches and is included in the second part of the axillary artery branch
What is the thoracoacromial artery?
These muscles have a proximal attachment on the adjacent sides of two metacarpals (as bipennate muscles)
What are dorsal interossei, 1st-4th?
This muscle has a distal attachment on the base of the 1st metacarpal
What is abductor pollicis longus?
This muscle is innervated by the radial nerve (C6, C7)
What is extensor carpi radialis longus?
This muscle draws the 5th metacarpal anterior and rotates it, bringing 5th digit into opposition with the thumb
What is opponens digiti?
This nerve runs through the carpal tunnel
What is the median nerve?