. Label all of the following muscles and their action. Include their

. Label all of the following muscles and their action. Include their origin and insertion if they are
bolded: subscapularis, deltoid m. anterior, short head of biceps brachii, brachioradialis, pronator
teres, flexor carpi radialis, palmaris longus, flexor carpi ulnaris, brachialis, long head of triceps
brachii, teres major, coracobrachialis, supraspinatus. (PUT SPECIAL SHAPES BY MUSCLES
THAT ACT AS SYNERGISTS)


Solution


From above left to right - deltoid, short head of biceps brachii, extensor carpi radialis longus,
flexor carpi radialis, palmaris longus
From bbelow left to right - infraspinatus, subscapularis , triceps, brachialis, supinator, flexor
carpi ulnaris
Subscapularis - origin - subscapular fossa, insertion - lesser tubercle of humerus
Deltoid - origin - from the scapula, insertion - deltoid tuberosity of humerus
Short head of biceps brachii - origin - coracoid process of scapula, insertion - radial tuberosity
Long head of triceps brachii - origin - infraglenoid tubercle of scapula, insertion - olacranon
process of ulna
Supraspinatus - origin - suptaspinous fossa of scapula, insertion - superior facet of greater
tubercle of humerus
Brachioradialis and brachialis muscles help the biceps brachii muscles in the flexion movement.
Thus Brachioradialis and brachialis are synergistic muscles.