Final Exam Muscles Flashcards
Name: Trapezius
Origin: Spinous process of C7-T12 and occipital protuberance
Insertion: Spine of scapula, Acromion process and lateral clavicle
Action: Elevation, Adduction, and upward rotation
Name: Levator Scapulae
Origin: Transverse process of C1 - C4
Insertion: Vertebral border of scapula
Action: Elevation
Name: Rhombiod Major
Origin: Spinous process T2 - T4
Insertion: Vertebral border of scapula
Action: Adduction and downward rotation
Name: Rhomboid Minor
Origin: Spinous process C7 - T1
Insertion: Vertebral border of scapula
Action: Adduction and downward rotation
Name: Serratus Anterior
Origin: Ribs 1-9
Insertion: Vertebral border of scapula
Action: Upward rotation and abduction
Function: Hold scapula to thoracic wall
Name: Pectoralis Minor
Origin: Ribs 3-5
Insertion: Coracoid Process
Action: Depression and abduction
Name: Deltoid
Origin: Spine of scapula, Acromian, Lateral Clavicle
Insertion: Deltoid tuberosity
Action: Abduction, Flexion or Extension
Name: Pectoralis Major
Origin: Medial Clavicle, Sternum, Costal Cartilage
Insertion: Bicipital Groove
Action: All: Adduction
Clavicular: Flexion
Sternal: Mild Extension
Name: Latissimus Dorsi
Origin: Spinous process of T7 - S5, Posterior Iliac crest, Ribs 9-12
Insertion: Bicipital Groove
Action: Extension, Adduction, Internal rotation
Name: Coracobrachialis
Origin: Coracoid
Insertion: Mid medial humerus
Action: Flexion and Adduction
Name: Subscapularis
Origin: Subscapular fossa
Insertion: Lesser tubercule
Action: Internal Rotation
Name: Supraspinatus
Origin: Supraspinous fossa
Insertion: Greater tubercule
Action: Abduction and external rotation
Name: Infraspinatus
Origin: Infraspinous fossa
Insertion: Greater tubercule
Action: External rotation
Name: Teres minor
Origin: Lateral border of scapula
Insertion: Greater tubercule
Action: External rotation and adduction
Name: Teres major
Origin: Inferior angle of scapula
Insertion: Bicipital groove
Action: Extension, External rotation, adduction
Name: Biceps Brachii
Origin: Long head: Supraglenoid tuberosity
Short head: Coracoid process
Insertion: Radial tuberosity
Action: Shoulder flexion and elbow flexion and supination
Name: Brachialis
Origin: Anterior humerus
Insertion: Coronoid process
Action: Elbow flexion
Name: Brachioradialis
Origin: Lateral supracondylar ridge
Insertion: Styloid process of the radius
Action: Flexion, pronation and supination
Name: Triceps brachii
Origin: Long head: Infraglenoid tuberosity
Lateal head: Posterior humerus
Medial Head: Medial posterior humerus
Insertion: Olecranon
Action: Elbow and shoulder extension
Name: Pronator quadratus
Origin: Distal ulna
Insertion: Distal radius
Action: Pronation
Name: Pronator teres
Origin: Medial epicondylar ridge and coronoid process
Insertion: Lateral radius
Action: Pronation and elbow flexion
Name: Flexor Carpi Radialis
Origin: Medial epicondyle
Insertion: Base of metacarpals II and III
Action: Flexion and ABduction
Weak elbow flexion
Name: Flexor Carpi ulnaris
Origin: Medial epicondyle and olecranon
Insertion: Base of metacarpal V, Hamate and pisiform
Action: Flexion and adduction
Weak elbow flexion
Name: Extensor carpi ulnaris
Origin: Lateral epicondyle
Insertion: Base of metacarpal V
Action: Wrist extension and adduction
Weak elbow flexion
Name: Extensor carpi radialis longus
Origin: Lateral epicondyle
Insertion: Base of metacarpal II
Action: Wrist extension and abduction
Weak elbow flexion
Name: Extensor carpi radialis brevis
Origin: Lateral epicondyle
Insertion: Base of metacarpal III
Action: Extension and weak abduction
Name: Extensor digitorum
Origin: Lateral epicondyle
Insertion: Phalanges of digits II - V
Action: Wrist extension and digit extension
Name: Flexor pollicis longus
Origin: Medial epicondyle, coronoid process, radius, interosseous membrane
Insertion: Base of distal phalanyx of pollex
Action: Wrist flexion and pollex flexion
Name: Extensor pollicis longus
Origin: Middle ulna and interosseous membrane
Insertion: Base of distal phalanyx of pollex
Action: Wrist extension and pollex extension
Name: Extensor pollicis brevis
Origin: Middle radius and interosseous membrane
Insertion: Base of proximal phalanyx of pollex
Action: Wrist abduction and extension
Extension and abduction of pollex
Name: Abductor pollicis longus
Origin: Ulna, radius, interosseous membrane
Insertion: Base of metacarpal I
Action: Pollex abduction
