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Large Animal Anatomy > Muscle Origins, Insertions, Actions, and Innervations for Midterm > Flashcards

Muscle Origins, Insertions, Actions, and Innervations for Midterm Flashcards

1
Q

Brachiocephalicus m: Name the 2 parts

A

Cleidomastoideus & cleidobrachialis

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2
Q

Origin: Cleidomastoideus

A

Clavicular intersection

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3
Q

Insertion: Cleidomastoideus

A

Mastoid proccess

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4
Q

Action: Cleidomastoideus

A

Unilateral: Advances limb or turbs head. Bilateral: Flexes head & neck

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5
Q

Innervation: Cleidomastoideus

A

Accessory, Axillary, and Cervical n’s

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6
Q

Origin: Cleidobrachialis

A

Clavicular intersection

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7
Q

Insertion: Cleidobrachialis

A

Crest of the humerus

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8
Q

Action: Cleidobrachialis

A

Unilateral: Advances limb or turbs head. Bilateral: Flexes head & neck

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9
Q

Innervation: Cleidobrachialis

A

Accessory, Axillary, and Cervical n’s

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10
Q

Origin: Sternocephalicus

A

Menubrium of the sternum

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11
Q

Insertion: Sternocephalicus

A

Ramus of the mandible

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12
Q

Action: Sternocephalicus

A

Unilateral: Turns head and neck. Bilateral: Flexes head and neck.

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13
Q

Innervation: Sternocephalicus

A

Ventral branch of the accessory n

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14
Q

Name the 2 parts of the trapezius m

A

Trapezius cervicis and thoracis

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15
Q

Origin: Trapezius cervicis

A

Funiculus nuchae

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16
Q

Insertion: Trapezius cervicis

A

Spine of the Scapula

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17
Q

Action: Trapezius cervicis

A

Elevate & advance scapula

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18
Q

Innervation: Trapezius cervicis

A

Dorsal branch of the accessory n

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19
Q

Origin: Trapezius thoracis

A

Supraspinous ligament

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20
Q

Insertion: Trapezius thoracis

A

Spine of the scapula

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21
Q

Action: Trapezius thoracis

A

Elevate and retract scapula

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22
Q

Innervation: Trapezius thoracis

A

Dorsal branch of the accessory n

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23
Q

Origin: Gluteus medius

A

Aponeurosis of longissimus, lumborum, ilium, and sacrosciatic ligament

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24
Q

Insertion: Gluteus medius

A

Greater trochanter

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25
Q

Action: Gluteus medius

A

Extend hip & abduct thigh

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26
Q

Innervation: Gluteus medius

A

Cranial & caudal gluteal n’s

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27
Q

Origin: Biceps femoris

A

Sacrum, sacrosciatic ligament, ischial tuberocity

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28
Q

Insertion: Biceps femoris

A

fascia lata-patella, lateral patellar ligament, calcaneal tuberosity

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29
Q

Action: Biceps femoris

A

Extend hip & abduct thigh

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30
Q

Innervation: Biceps femoris

A

Caudal gluteal & sciatic n’s

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31
Q

Origin: Semitendinosus

A

Cd 1-2 & ventral part of the ischial tuberosity

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32
Q

Insertion: Semitendinosus

A

Tibial crest, crural fascia, and calcaneal tuberosity

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33
Q

Action: Semitendinosus

A

Extend hip, flex stifle, extend hock

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34
Q

Innervation: Semitendinosus

A

Caudal gluteal & sciatic n’s

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35
Q

Origin: Gracilis

A

subpelvic tendon (pelvic symphysis)

36
Q

Insertion: Gracilis

A

Medial patellar ligament & medial surface of the tibia

37
Q

Action: Gracilis

A

Adduct limb

38
Q

Innervation: Gracillis

A

Obturator n

39
Q

Name the m’s that make up the quadriceps femoris m

A

Rectus femoris, vastus lateralis, vastus medialis, vastus intermedius

40
Q

Origin: Rectus femoris

A

Body of the ilium

41
Q

Insertion: Rectus femoris

A

tibial toberosity

42
Q

Action: Rectus femoris

A

Flex hip & extend stifle

43
Q

Innervation: Rectus femoris

44
Q

Origin: Vastus lateralis

A

Lateral surface of the femur

45
Q

Insertion: Vastus lateralis

A

Tibial tuberosity

46
Q

Action: Vastus lateralis

A

Extend stifle joint

47
Q

Innervation: Vastus lateralis

48
Q

Origin: Vastus medialis

A

Medial surface of the femur

49
Q

Insertion: Vastus medialis

A

Tibial tuberosiry

50
Q

Action: Vastus medialis

A

Extend stifle joint

51
Q

Innervation: Vastus medialis

52
Q

Origin: Vastus intermedius

A

Cranial surface of the femur

53
Q

Insertion: Vastus intermedius

A

tibial tuberosity

54
Q

Action: Vastus intermedius

A

Extend stifle joint

55
Q

Innervation: Vastus intermedius

56
Q

Origin: Tibialis cranialis

A

lateral condyle of the tibia

57
Q

Insertion: Tibialis cranialis

A

3rd metatarsal & tarsal bones 1&2

58
Q

Action: Tibialis cranialis

A

Flex hock joint

59
Q

Innervation: Tibialis cranialis

A

Deep peroneal n

60
Q

Origin: Peroneus tertius

A

Extensor fossa of the femur

61
Q

Insertion: Peroneus tertius

A

3rd metatarsal, 3rd tarsal, and 4th tarsal bones

62
Q

Action: Peroneus tertius

A

Flex the hock when the stifle is flexed, extend stifle when tarsus is extended

63
Q

Innervation: Peroneus tertius

A

Branches of the deep peroneal n (sensory only)

64
Q

Origin: Long digital extensor

A

Extensor fossa of femur

65
Q

Insertion: Long digital extensor

A

Extensor process of 3rd phalanx

66
Q

Action: Long digital extensor

A

Extend stifle & digits, flex hock

67
Q

Innervation: Long digital extensor

A

Deep peroneal n

68
Q

Origin: Lateral digital extensor

A

Lateral collateral ligament of stifle & adjacent areas of tibia and fibula

69
Q

Insertion: Lateral digital extensor

A

Tendon of insertion of long digital extensor

70
Q

Action: Lateral digital extensor

A

Extend the digit, flex the hock *

71
Q

Innervation: Lateral digital extensor

A

Superficial peroneal n

72
Q

Origin: Gastrocnemius

A

Supracondyloid tuberosity of the femur

73
Q

Insertion: Gastrocnemius

A

Calcaneal tuberosity, proximal extremity of 2nd phalanx and distal extremity of 1st phalanx

74
Q

Action: Gastrocnemius

A

Flex the digit & extend the hock, flex stifle

75
Q

Innervation: Gastrocnemius

76
Q

Origin: Superficial digital flexor

A

Supracondyloid fossa of the femur

77
Q

Insertion: Superficial digital flexor

A

Calcaneal tuberosity, proximal extremity of the 2nd phalanx and distal extremity of the 1st phalanx

78
Q

Action: Superficial digital flexor

A

Flex the digit & extend the hock, flex the stifle*

79
Q

Innervation: Superficial digital flexor

80
Q

Origin: Deep digital flexor

A

Lateral condyle and lateral border of the tibia & fibula

81
Q

Insertion: Deep digital flexor

A

Flexor surface of the 3rd phalanx

82
Q

Action: Deep digital flexor

A

Flex the digit and extend the hock

83
Q

Innervation: Deep digital flexor

84
Q

Origin: Interosseus (suspensory ligament)

A

Distal row of tarsal bones & proximal extremity of the 3rd metatarsal bones

85
Q

Insertion: Interosseus (suspensory ligament)

A

Abaxial surface of proximal sesamoids and conjoined tendon of insertion of the long and lateral lateral digital extensor m’s

86
Q

Action: Interosseus (suspensory ligament)

A

Support the fetlock (prevent overextension)

87
Q

Innervation: Interosseus (suspensory ligament)

A

Branches of the tibial n (suspensory only)

Large Animal Anatomy (7 decks)

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