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A&P Lab > Muscle Quiz 1 > Flashcards

Muscle Quiz 1 Flashcards

1
Q

Sternocleidomastoid Origin

A
  • Manubrium

- Medial portion of the clavicle

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2
Q

Sternocleidomastoid Insertion

A
  • Mastoid process of the temporal bone

- Superior nuchal line of the occipital bone

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3
Q

Sternocleidomastoid Action

A
  • Causes flexion of neck forward

- Rotates head toward shoulder on opposite side

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4
Q

Splenius Capitis and Cervicis Origin

A
  • Ligamentum nuchae

- Spinous processes of C7-T6

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5
Q

Splenius Capitis and Cervicis Insertion

A
  • Mastoid process
  • Occipital bone
  • Transverse process of C2-C4
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6
Q

Splenius Capitis and Cervicis Action

A

Extend or hyperextend head

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7
Q

Trapezius Origin

A
  • Occipital bone
  • Ligamentum nuchae
  • Spines of C7 and all thoracic vertebrae
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8
Q

Trapezius Insertion

A
  • Acromion and spinous process of scapula

- Lateral third of clavicle

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9
Q

Trapezius Action

A

-Raises, rotates and adducts scapula and stabilizes it

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10
Q

Pectoralis Minor Origin

A

-Anterior surface of ribs 3-5 near their costal cartilage

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11
Q

Pectoralis Minor Insertion

A

-Coracoid process of scapula

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12
Q

Pectoralis Minor Action

A

-With ribs fixed, draws scapula forward and inferiorly

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13
Q

Deltoid Origin

A
  • Lateral third of the clavicle

- Acromion and spine of scapula

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14
Q

Deltoid Insertion

A

-Deltoid tuberosity of Humerus

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15
Q

Deltoid Action

A

-Acting as a whole, prime mover of arm abduction

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16
Q

Pectoralis Major Origin

A
  • Clavicle
  • Sternum
  • Cartilage of ribs 1-6
  • Aponeurosis of external oblique muscle
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17
Q

Pectoralis Major Insertion

A

-Fibers converge to insert by short tendon into intertubercular sulcus of Humerus

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18
Q

Pectoralis Major Action

A

-Prime mover of arm flexion; adducts, medially rotates arm

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19
Q

Latissimus Dorsi Origin

A
  • Attachment to spinous process of lower thoracic vertebrae
  • Last 3-4 ribs
  • Illiac crest
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20
Q

Latissimus Dorsi Insertion

A

-Floor of intertubercular sulcus of humerus

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21
Q

Latissimus Dorsi Action

A

-Prime mover of arm extension; abducts and medially rotates arm

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22
Q

Biceps Brachii Origin

A
  • Short head-Coracoid process

- Long head-Runs in intertubercular sulcus and within capsule of shoulder joint

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23
Q

Biceps Brachii Insertion

A

Radial tuberosity

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24
Q

Biceps Brachii Action

A

-Flexion of elbow and supination of forearm

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25
Q

Brachialis Origin

A

-Distal portion of anterior Humerus

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26
Q

Brachialis Insertion

A

-Coranoid process of ulna

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27
Q

Brachialis Action

A

-Major flexor of forearm

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28
Q

Triceps Brachii Origin

A
  • Long head-inferior margin of glenoid cavity
  • Lateral head-posterior humerus
  • Medial head-distal radial groove on posterior humerus
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29
Q

Triceps Brachii Insertion

A

-Olecranon process of ulna

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30
Q

Triceps Brachii Action

A

-Powerful forearm extensor

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31
Q

Brachioradialis Origin

A

-Lateral supracondylar ridge of humerus

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32
Q

Brachioradialis Insertion

A

-Styloid process of radius

33
Q

Brachioradialis Action

A

-Flexes forearm at elbow

34
Q

Flexor Carpi Radialis Origin

A

-Medial epicondyle of humerus

35
Q

Flexor Carpi Radialis Insertion

A

-Bases of second and third metacarpals

36
Q

Flexor Carpi Radialis Action

A

-Flexes and radial abducts hand at wrist

37
Q

Flexor Carpi Ulnaris Origin

A

-Medial epicondyle of humerus

38
Q

Flexor Carpi Ulnaris Insertion

A

-Pisiform, hook of hamate and base of 5th metacarpal

39
Q

Flexor Carpi Ulnaris Action

A

Flexes and ulnar adducts hand at wrist

40
Q

Extensor Carpi Radialis Longus Origin

A

-Lateral supracondylar ridge of humerus

41
Q

Extensor Carpi Radialis Longus Insertion

A

-base of metacarpal 2

42
Q

Extensor Carpi Radialis Longus Action

A

-Extends and abducts wrist

43
Q

Extensor Carpi Radialis Brevis Origin

A

Lateral epicondyle of humerus

44
Q

Extensor Carpi Radialis Brevis Insertion

A

-Base of metacarpal 3

45
Q

Extensor Carpi Radialis Brevis Action

A

-Extends and abducts wrist

46
Q

Extensor Carpi Ulnaris Origin

A

-Lateral epicondyle of humerus

47
Q

Extensor Carpi Ulnaris Insertion

A

Base of 5th metacarpal (dorsal)

48
Q

Extensor Carpi Ulnaris Action

A

-Extends and ulnar adducts hand at wrist

49
Q

Flexor Digitorum Superficialis Origin

A

-Medial epicondyle of humerus and coronoid process of ulna (Upper anterior surface of radius

50
Q

Flexor Digitorum Superficialis Insertion

A

-Middle phalanges of digits 2-5

51
Q

Flexor Digitorum Superficialis Action

A

-Flexes middle phalanges also flexes proximal phalanges hand at wrist and forearm at elbow

52
Q

Flexor Digitorum Profundis Origin

A

-Anteromedial surface of ulna. Interosseous membrane

53
Q

Flexor Digitorum Profundis Insertion

A

-Distal phalanges of fingers 2-5

54
Q

Flexor Digitorum Profundis Action

A

-Flexes distal phalanges

55
Q

Extensor Digitorum Origin

A

-Lateral epicondyle of humerus

56
Q

Extensor Digitorum Insertion

A

-Distal phalanges 2-5

57
Q

Extensor Digitorum Action

A

-Extends wrist and fingers (middle of digits 2-5)

58
Q

Diaphragm Origin

A
  • Inferior border of ribs and sternum

- Costal cartilages of last six ribs and lumbar vertebra

59
Q

Diaphragm Insertion

A

-Central tendon

60
Q

Diaphragm Action

A

-Prime mover of inspiration flattens on contraction

61
Q

External Intercostals Origin

A

-Inferior border of rib above

62
Q

External Intercostals Insertion

A

-Superior border of rib below

63
Q

External Intercostals Action

A

-Pull ribs toward one another to elevate rib cage

64
Q

Internal Intercostals Origin

A

-Superior border of rib below

65
Q

Internal Intercostals Insertion

A

-Inferior border of rib above

66
Q

Internal Intercostals Action

A

-Draw ribs together to depress rib cage

67
Q

External Oblique Origin

A

-External surfaces of ribs 5-12

68
Q

External Oblique Insertion

A

-Anterior illiac crest and abdominal aponeurosis to linea alba

69
Q

External Oblique Action

A

-Flexes vertebral column, rotates vertebral column, laterally flexes vertebral column

70
Q

Internal Oblique Origin

A

-Anterior iliac crest, lateral half of inguinal ligament and thoracolumbar fascia

71
Q

Internal Oblique Insertion

A

-Costal cartilages of ribs 8-12; abdominal aponeurosis to linea alba

72
Q

Internal Oblique Action

A

-Flexes vertebral column, rotates vertebral column, laterally flexes vertebral column

73
Q

Transverse Abdominus Origin

A

-Anterior iliac crest, lateral half of inguinal ligament, thoracolumbar fascia and cartilages of ribs 6-12

74
Q

Transverse Abdominus Insertion

A

-Abdominal aponeurosis to linea alba, xiphoid process and pubic symphysis

75
Q

Transverse Abdominus Action

A

-Compresses abdomen

76
Q

Rectus Abdominus Origin

A

-Pubic crest and symphysis pubis

77
Q

Rectus Abdominus Insertion

A

-Costal cartilages of ribs 5-7, xiphoid process of sternum

78
Q

Rectus Abdominus Action

A

-Flexes vertebral column; compresses abdomen

A&P Lab (9 decks)

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