Muscles Of The Upper Limb Flashcards
Deltoid
O: clavicle, acromion process, scapular spine
I: deltoid tuberosity of humerus
A: arm flexion, extension, abduction
Pectoralis major
O: clavicle, sternum, ribs 1-6
I: Inter tubercular groove of humerus
A: arm adduction, internal (medial) rotation of arm, arm flexion at shoulder
Latissimus dorsi
O: spinous processes of lower vertebrae, iliac crest, sacrum
I: Intertubercular groove of humerus
A: arm extension, arm adduction, IR at shoulder
Coracobrachialis
O: coracoid process
I: humerus
A: arm adduction, arm flexion
Teres major
O: inferior angle of the scapula
I: intertubercular groove of humerus
A: arm adduction, internal rotation, extension
Supraspinatus
O: supraspinous fossa
I: greater tubercle of the humerus
A: arm abduction
Infraspinatus
O: infraspinous fossa of scapula
I: greater tubercle of humerus
A: external rotation at shoulder
Teres minor
O: posterior lateral scapula
I: greater tubercle of humerus
A: external rotation at shoulder
Subscapularis
O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: internal rotation at shoulder
Biceps brachii
O: glenoid fossa of scapula (long head), coracoid process (short head)
I: radial tuberosity of radius
A: forearm flexion at elbow, arm flexion at shoulder, forearm and hand supination at radioulnar joints
Brachialis
O: humerus
I: coronoid process of the ulna
A: forearm flexion
Brachialis
O: humerus
I: Coronoid process of the ulna
A: forearm flexion
Brachioradialis
*in posterior compartment of forearm
O: humerus
I: styloid process of the radius
A: forearm flexion
Triceps brachii
O: glenoid (long head), posterior shaft of humerus (medial and lateral heads)
I: olecranon of ulna
A: arm extension (long head), forearm extension
Supinator
O: lateral epicondyle of the humerus
I: radius
A: forearm and hand supination at radioulnar joints
Pronator teres
O: medial epicondyle of the humerus
I: radius
A: forearm and hand pronation at radioulnar joints
Pronator quadratus
O: distal ulna
I: distal radius
A: forearm and hand pronation at radioulnar joints
Flexor carpi ulnaris
O: medial epicondyle of the humerus
I: medial metacarpals
A: hand flexion and adduction (ulnar deviation) at wrist
Flexor carpi radialis
O: medial epicondyle of the humerus
I: lateral metacarpals
A: hand flexion and abduction (radial deviation) at wrist
Flexor digitorum superficialis
O: medial epicondyle of the humerus
I: phalanges
A: finger flexion at interpalangeal joints, aids in hand flexion at wrist
Flexor digitorum profundus
O: medial epicondyle of the humerus
I: phalanges
A: finger flexion, aids in hand flexion
Palmaris longus
O: medial epicondyle of the humerus
I: palmar aponeurosis
A: hand flexion, adduction at wrist
Palmaris longus
O: medial epicondyle of the humerus
I: palmar aponeurosis
A: hand flexion, adduction at wrist
Extensor digiti minimi
O: lateral epicondyle of humerus
I: phalanges if the pinky
A: pinky extension at interphalangeal
Extensor digitorum
O: lateral epicondyle of the humerus
I: phalanges
A: finger extension and hand extension at the wrist
Extensor carpi ulnaris
O: lateral epicondyle of humerus
I: medial metacarpals
A: hand extension and ulnar deviation at wrist
Extensor carpi radial brevis and longus
O: lateral epicondyle
I: lateral metacarpals
A: hand extension and abduction (radial deviation)
