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Anatomy > Superior Muscles (origin, insertion, action) > Flashcards

Superior Muscles (origin, insertion, action) Flashcards

1
Q

temporalis [origin; insertion]

A

parietal & frontal bone; coronoid process of mandible

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2
Q

temporalis [action]

A

elevate/retract mandible at jaw

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3
Q

masseter [origin; insertion]

A

zygomatic arch; coronoid process, angle, and ramus of the mandible

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4
Q

masseter [action]

A

close jaw, elevate mandible at jaw

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5
Q

sternocleidomastoid [origin; insertion]

A

manubrium of sternum, sternal end of clavicle; mastoid process of temporal bone

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6
Q

sternocleidomastoid [action]

A

lateral flexion/rotation of the opposite side, flexes cervical vertebral column

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7
Q

splenius capitis [origin; insertion]

A

ligamentum nuchae; occipital bone, mastoid process of temporal bone

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8
Q

splenius cervicis [origin; insertion]

A

spinous process of thoracic vertebrae; transverse process of cervical vertebrae

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9
Q

splenius cervicis and capitis [action]

A

rotate head to the same side of contracting muscle, extend head/neck

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10
Q

trapezius [action]

A

rotate, depress, and adduct the scapula.

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11
Q

levator scapulae [action]

A

elevate scapula

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12
Q

rhomboid minor and major [action]

A

stabilize, elevate, and adduct the scapula

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13
Q

serratus anterior [action]

A

stabilize and abduct the scapula

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14
Q

pectoralis minor [action]

A

depress and abduct the scapula

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15
Q

The greater tubercle of the humerus is an insertion point for which muscles? (3)

A

supraspinatus, infraspinatus, teres minor

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16
Q

supraspinatus [origin]

A

supraspinous fossa of the scapula

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17
Q

supraspinatus [action]

A

abducts arm

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18
Q

infraspinatus [origin]

A

infraspinous fossa of the scapula

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19
Q

infraspinatus [action]

A

laterally rotates arm

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20
Q

teres minor [origin]

A

lateral border of scapula

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21
Q

teres minor [action]

A

laterally rotates and adducts arm

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22
Q

subscapularis [origin; insertion]

A

subscapular fossa of scapula; lesser tubercle of humerus

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23
Q

subscapularis [action]

A

medially rotates arm

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24
Q

teres major [origin; insertion]

A

lateral border and angle of scapula; lesser tubercle and intertubercular groove of humerus

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25
Q

teres major [action]

A

extends, adducts, and medially rotates the arm

26
Q

latissimus dorsi [origin; insertion]

A

spinous process of thoracic vertebrae, lower ribs, iliac crest of ilium; intertubercular groove of humerus

27
Q

latissimus dorsi [action]

A

extends, adducts, and medially rotates arm

28
Q

deltoid [origin; insertion]

A

acromial end of clavicle, acromion and spine of scapula; deltoid tuberosity of humerus

29
Q

deltoid [action]

A

abducts, flexes, and extends the arm. medial and lateral arm rotation

30
Q

pectoralis major [origin; insertion]

A

clavicle, costal cartilages; intertubercular groove of humerus

31
Q

pectoralis major [action]

A

flexes, adducts, and medially rotates arm

32
Q

the olecranon process of ulna is an insertion point for which muscles?

A

three heads of triceps brachii

33
Q

long head of triceps brachii [origin]

A

infraglenoid tubercle of scapula

34
Q

long head of triceps brachii [action]

A

extension of the arm and forearm

35
Q

lateral head of triceps brachii [origin]

A

posterior shaft of humerus

36
Q

lateral and medial head of triceps brachii [action]

A

extension of forearm

37
Q

medial head of triceps brachii [origin]

A

distal two-thirds of posterior shaft of humerus

38
Q

biceps brachii [insertion]

A

radial tuberosity of radius

39
Q

long head of biceps brachii [origin]

A

supraglenoid tubercle of scapula

40
Q

biceps brachii [action]

A

flexes arm (long head), flexes and supinates forearm, supinates forearm at radioulnar joint

41
Q

coracobrachialis [origin, insertion]

A

coracoid process of scapula, middle medial shaft of humerus

42
Q

coracobrachialis [actions]

A

adducts and flexes arm

43
Q

brachialis [origin, insertion]

A

distal, anterior surface of humerus; coronoid process of ulna

44
Q

brachialis [action]

A

flexes forearm

45
Q

brachioradialis [origin, insertion]

A

lateral distal humerus; styloid process of radius

46
Q

brachioradialis [action]

A

flexes forearm

47
Q

pronator teres [action]

A

pronates forearm at radioulnar joint

48
Q

flexor carpi radialis [action]

A

flexes and abducts hand

49
Q

palmaris longus [action]

A

flexes hand, tenses facia of palm

50
Q

flexor carpi ulnaris [action]

A

flexes and adducts hand

51
Q

flexor digitorum superficialis [action]

A

flexes hand and middle phalanx of each finger

52
Q

flexor digitorum profundus [action]

A

flexes hand, distal and middle phalanges of each finger

53
Q

flexor pollicis longus [action]

A

flexes distal phalanx of thumb at IP joint

54
Q

flexor retinaculum

A

fibrous band of CT that covers the palmar surface of the carpal bones

55
Q

extensor carpi radialis brevis and longus [action]

A

extends and abducts hand

56
Q

extensor digitorum [action]

A

extends hand, distal and middle phalanges

57
Q

extensor carpi ulnaris [action]

A

extends and adducts hand

58
Q

abductor pollicis longus [action]

A

abducts and extends thumb joint between carpals and metacarpals, extends hand

59
Q

extensor pollicis brevis [action]

A

extends hand, extends thumb at MP joint

60
Q

extensor pollicis longus [action]

A

extends hand, extends thumb at MP/IP joints

61
Q

supinator [action]

A

supinates forearm at radioulnar joint

62
Q

extensor retinaculum [action]

A

fibrous band of CT that covers the dorsal surface of the carpal bones

Anatomy (12 decks)

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