Upper Extremity Muscles

Question 1

Trapezius origin

Answer 1

occipital bone, spinous process

Question 2

Trapezius insertion

Answer 2

scapular spine, acromion, distal clavicle

Question 3

Trapezius action

Answer 3

elevate, depress, adduct scapula

Question 4

Rhomboids origin

Answer 4

spinous process

Question 5

Rhomboids insertion

Answer 5

medial border of scapula

Question 6

Levator scapulae origin

Answer 6

transverse process

Question 7

Levator scapulae insertion

Answer 7

superior angle of scapula

Question 8

Levator scapulae action

Answer 8

elevate scapula

Question 9

Pectoralis minor origin

Answer 9

ribs

Question 10

Pectoralis minor insertion

Answer 10

coracoid process of scapula

Question 11

Pectoralis minor action

Answer 11

depress scapula

Question 12

Serratus anterior origin

Answer 12

ribs

Question 13

Serratus anterior insertion

Answer 13

medial border of scapula

Question 14

Serratus anterior action

Answer 14

abduct scapula

Question 15

Pectoralis major origin

Answer 15

sternum and clavicle

Question 16

Pectoralis major instertion

Answer 16

greater tubercle of humerus

Question 17

Pectoralis major action

Answer 17

flex and adduct arm

Question 18

Coracobrachialis origin

Answer 18

coracoid process of scapula

Question 19

Coracobrachialis insertion

Answer 19

proximal humerus

Question 20

Coracobrachialis action

Answer 20

flex and adduct arm

Question 21

Lastissimus dorsi origin

Answer 21

spinous process, iliac crest

Question 22

Lastissimus dorsi insertion

Answer 22

lesser tubercle of humerus

Question 23

Lastissimus dorsi action

Answer 23

extend and adduct arm

Question 24

Teres major origin

Answer 24

inferior angle of scapula

Question 25

Teres major insertion

Answer 25

lesser tubercle of humerus

Question 26

Teres major action

Answer 26

extend and adduct arm

Question 27

Deltoid origin

Answer 27

scapular spine, acromion, clavicle

Question 28

Deltoid insertion

Answer 28

deltoid tuberosity of humerus

Question 29

Deltoid action

Answer 29

abduct, flex, and extend arm

Question 30

4 rotator cuff muscles

Answer 30

supraspinatus, infraspinatus, teres minor, subscapularis

Question 31

Supraspinatus origin

Answer 31

supraspinatus fossa of scapula

Question 32

Infraspinatus origin

Answer 32

infraspinatus fossa of scapula

Question 33

Teres minor origin

Answer 33

lateral border of scapula

Question 34

Rotator cuff muscles insertion

Answer 34

greater tubercle of humerus

Question 35

Supraspinatus action

Answer 35

abduct arm

Question 36

Infraspinatus and teres minor action

Answer 36

laterally rotate arm

Question 37

Subscapularis origin

Answer 37

subscapular fossa of scapula

Question 38

Subscapularis insertion

Answer 38

lesser tubercle of humerus

Question 39

Subscapularis action

Answer 39

medially rotate arm

Question 40

Biceps brachii origin

Answer 40

long head: above glenoid fossa short head: coracoid process of scapula

Question 41

Biceps brachii insertion

Answer 41

radial tuberosity of radius (spans 2 joints!)

Question 42

Biceps brachii action

Answer 42

flex and supinate forearm

Question 43

Brachialis origin

Answer 43

distal humerus

Question 44

Brachialis insertion

Answer 44

proximal ulna

Question 45

Brachialis action

Answer 45

flex forearm

Question 46

Brachioradialis origin

Answer 46

distal lateral humerus

Question 47

Brachioradialis insertion

Answer 47

styloid process of radius

Question 48

Brachioradialis action

Answer 48

flex forearm

Question 49

Triceps brachii lateral head origin

Answer 49

lateral surface of humerus

Question 50

Triceps brachii long head origin

Answer 50

below glenoid fossa

Question 51

Triceps brachii medial head origin

Answer 51

posterior surface of humerus

Question 52

Triceps brachii insertion

Answer 52

olecranon process of ulna

Question 53

Triceps brachii action

Answer 53

extend forearm

Question 54

Pronator teres and pronator quadratus origin

Answer 54

ulna

Question 55

Pronator teres and pronator quadratus insertion

Answer 55

radius

Question 56

Pronator teres and pronator quadratus action

Answer 56

pronate forearm

Question 57

Supinator origin

Answer 57

proximal ulna

Question 58

Supinator insertion

Answer 58

proximal radius

Question 59

Supinator action

Answer 59

supinate forearm

Question 60

Forearm flexors origin

Answer 60

medial epicondyles of humerus, radius, ulna

Question 61

Forearm flexors insertion

Answer 61

carpals, metacarpals, phalanges

Question 62

Forearm flexors action

Answer 62

flex wrist, fingers, thumb

Question 63

Forearm extensors origin

Answer 63

lateral epicondyles of humerus, radius, ulna

Question 64

Forearm extensors insertion

Answer 64

carpals, metacarpals, phalanges

Question 65

Forearm extensors action

Answer 65

extend wrist, fingers, thumb, abduct thumb

Question 66

Intrinsic muscle of the thumb

Answer 66

thenar

Question 67

Intrinsic muscle of the pinky

Answer 67

hypothenar