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Dexter's Class > Muscles > Flashcards

Muscles Flashcards

1
Q

Trapezius

A

ACTION
Upper: elevation of scapula, scapular upward rotation
With insertion fixed: bilateral: cervical extension, capital extension; unilateral: extension and lateral flexion of head and neck to same side, rotation of head and neck to opposite side (the above combine to turn the face toward the opposite, which Kendall utilizes in her unilateral MMT for the upper trapexius)
Middle: adduction of scapula
Lower: depression of scapula, adduction of scapula, scapular upward rotation
NERVE
CN XI/Spinal Accessory, (C3, C4)

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2
Q

Rhomboid Major and Minor

A

ACTION: scapular adduction, scapular downward rotation, scapular elevation
NERVE: dorsal scapular (C5)

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3
Q

Levator Scapulae

A

ACTION: scapular elevation, scapular adduction, scapular downward rotation, cervical rotation to same side (unilateral action), cervical side bending to same side (unilateral), assist cervical extension (bilateral action)
NERVE: Dorsal scapular (C3, C4)

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4
Q

Serratus Anterior

A

ACTION: scapular abduction, scapular upward rotation, keeps medial border of scapula drawn anteriorly close to thoracic wall; prevents ‘winging’
NERVE: Long Thoracic (C5-C7)

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5
Q

Pectoralis Minor

A

ACTION: scapular protraction (Kendall calls it anterior tilt of scapula), elevation of ribs in forced inspiration with scapula fixed by levator scapulae
NERVE: medial and lateral pectoral (C5-T1)

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6
Q

Latissimus Dorsi

A

ACTION: Shoulder extension, shoulder adduction, shoulder internal rotation, *hyperextension of spine (acting bilaterally with humeral attachment fixed), *anterior tilt of pelvis (acting bilaterally with humeral attachment fixed)
NERVE: thoracodorsal (C6-C8)

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7
Q

Pectoralis Major

A

ACTION:
Whole: shoulder adduction, shoulder internal rotation, elevation of thorax in forced inspiration (with upper extremities fixed)
Upper (clavicular): shoulder internal rotation, shoulder flexion, shoulder horizontal adduction
Lower (sternocostal): obliquelly adduct shoulder (toward opposite hip), shoulder extension
NERVE:
Upper fibers: lateral pectoral (C5-C7)
Lower fibers: medial and lateral (C6-T1)

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8
Q

Subscapularis

A

ACTION: shoulder internal rotation, stabilization of GH joint
NERVE: upper subscapular and lower subscapular (C5, C6)

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9
Q

Subclavius

A

ACTION: assist shoulder depression, depresses and moves clavicle forward
NERVE: nerve to subclavius (off brachial plexus) (C5, C6)

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10
Q

Deltoid

A

ACTION:
Anterior: shoulder flexion, shoulder internal rotation, abduction, shoulder horizontal adduction
Middle: shoulder abduction
Posterior: shoulder extension, shoulder external rotation, abduction, shoulder horizontal abduction
NERVE: axillary (C5, C6)

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11
Q

Supraspinatus

A

ACTION: shoulder abduction, stabilization of GH joint
NERVE: suprascapular (C5, C6)

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12
Q

Infraspinatus

A

ACTION: shoulder external rotation, stabilization of GH joint
NERVE: suprascapular (C5, C6)

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13
Q

Teres Minor

A

ACTION: shoulder external rotation, stabilization of GH joint
NERVE: axillary (C5, C6)

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14
Q

Teres Major

A

ACTION: shoulder extension (from a fixed position), shoulder adduction, shoulder internal rotation
NERVE: lower subscapular (C5, C6)

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15
Q

Coracobrachialis

A

ACTION: shoulder flexion, shoulder adduction
NERVE: musculocutaneous (C5-C7)

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16
Q

Biceps Brachii

A

ACTION: shoulder flexion (not in book), elbow flexion, forearm supination, stabilization of GH joint
NERVE: musculocutaneous (C5, C6)

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17
Q

Brachialis

A

ACTION: elbow flexion
NERVE: musculocutaneous (C5, C6)
note: some consider radial and C7 (due to small contribution to lateral part of muscle; we will not include it for testing purposes – just go with musculocutaneous and C5, C6)

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18
Q

Triceps Brachii

A

ACTION:
Whole: elbow extension
Long Head: also assists in shoulder extension and adduction
NERVE: radial (C6-C8)

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19
Q

Brachioradialis

A

ACTION: elbow flexion
NERVE: radial (C5, C6)

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20
Q

Anconeus

A

ACTION: elbow extension (weak)
NERVE: radial (C6-C8)

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21
Q

Supinator

A

ACTION: supination of forearm
NERVE: radial (C6, C7)

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22
Q

Pronator Teres

A

ACTION: pronation of forearm, assists elbow flexion
NERVE: median (C6, C7)

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23
Q

Pronator Quadratus

A

ACTION: pronation of forearm
NERVE: median (anterior interosseous) (C7, C8)

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24
Q

Extensor Carpi Radialis Longus

A

ACTION: wrist extension, radial (abduction) deviation, assist elbow flexion
NERVE: radial (C6, C7)

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25
Q

Extensor Carpi Radialis Brevis

A

ACTION: wrist extension, assit radial deviation
NERVE: radial (posterior interosseous) (C7, C8)

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26
Q

Extensor Carpi Ulnaris

A

ACTION: wrist extension, ulnar (adduction) deviation
NERVE: radial (posterior interosseous) (C7, C8)

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27
Q

Flexor Carpi Radialis

A

ACTION: wrist flexion, radial deviation (abduction), assist elbow flexion, assist forearm pronation
NERVE: median (C6, C7)

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28
Q

Palmaris Longus

A

ACTION: wrist flexion, tenses palmar fascia
NERVE: median (C7, C8)

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29
Q

Flexor Carpi Ulnaris

A

ACTION: wrist flexion, ulnar deviation (adduction), assist elbow flexion
NERVE: ulnar (C7-T1)

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30
Q

Extensor Digitorum

A

ACTION: MP extension (2-5 digits), IP extension in conjunction with the hand intrinsics (2-5 digits); without the intrinsics produces MP hyperextension, assist wrist extension
NERVE: radial (posterior interosseous) (C7, C8)

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31
Q

Extensor Indicis

A

ACTION: MP extension of index finger, IP extension in conjunction with the hand intrinsics in the index finder, assist wrist extension
NERVE: radial (posterior interosseous) (C7, C8)

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32
Q

Flexor Digitorum Superficialis

A

ACTION: PIP flexion (2-5 digits), assist MP flexion (2-5 digits), assist wrist flexion
NERVE: medial (C8, T1)

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33
Q

Flexor Digitorum Profundus

A

ACTION: DIP flexion (2-5 digits), assist MP and PIP flexion (2-5 digits), assist wrist flexion
NERVE: median (anterior interosseous) for digits 2 and 3 (C8, T1), ulnar for digits 4 and 5 (C8-T1)

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34
Q

Extensor Digiti Minimi

A

ACTION: little finger MP and IP extension IN CONJUNCTION WITH THE HAND INTRINSICS IN LITTLE FINGER, assist wrist extension
NERVE: radial (posterior interosseous) (C7, C8)

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35
Q

Abductor Digiti Minimi

A

ACTION: little finger abduction, assist little finger opposition, may assist little finger MCP flexion and IP extension
NERVE: ulnar (deep branch) (C8, T1)

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36
Q

Flexor Digiti Minimi Brevis

A

ACTION: little finger MP flexion, assist little finger opposition
NERVE: ulnar (deep branch) (C8, T1)

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37
Q

Opponens Digiti Minimi

A

ACTION: little finger opposition
NERVE: ulnar (deep branch) (C8, T1)

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38
Q

Palmaris Brevis

A

ACTION: corrugates skin on ulnar side of head
NERVE: ulnar (superficial branch) (C8, T1)

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39
Q

Lumbricales

A

ACTION: MP flexion and simultaneous IP extension, 4th lumbrical assist opposition of 5th digit
NERVE: median for 1st and 2nd lumbricales (C8, T1), ulnar for 3rd and 4th lumbricales (C8, T1)

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40
Q

Dorsal Interossei

A

ACTION: MP abduction at the index, middle and ring fingers, assist MP flexion, assist IP extension, the 1st assist thumb adduction
NERVE: ulnar (deep branch) (C8, T1)

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41
Q

Palmar Interossei

A

ACTION: MP adduction at the index, ring and little fingers, assist MP flexion, assist IP extension, assist opposition of digit 5 (3rd interoseus)
NERVE: ulnar (deep branch) (C8, T1)

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42
Q

Abductor Pollicis Longus

A

ACTION: thumb CMC abduction, thumb CMC extension radial deviation, assist wrist flexion (weak)
NERVE: radial (posterior interosseous) (C7, C8)

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43
Q

Extensor Pollicis Longus

A

ACTION: thumb IP extension, assist thumb MP extension, assist thumb CMC extension, assist radial deviation
NERVE: radial (posterior interosseous) (C7, C8)

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44
Q

Extensor Pollicis Brevis

A

ACTION: thumb MP extension, thumb CMC extension, thumb CMC abduction, assist radial deviation, assist wrist extension
NERVE: radial (posterior interosseous) (C7, C8)

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45
Q

Flexor Pollicus Longus

A

ACTION: thumb IP flexion, assist MP flexion, assist CMC flexion, assist wrist flexion
NERVE: median (anterior interosseous) (C7, C8)

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46
Q

Flexor Pollicis Brevis

A

ACTION: thumb MP flexion, thumb CMC flexion, assist thumb opposition
NERVE: median (lateral branch) to superficial head (C8, T1)
ulnar (deep branch) to deep head (C8, T1)

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47
Q

Abductor Pollicis Brevis

A

ACTION: thumb CMC abduction, thumb MP abduction, assist thumb opposition, assist thumb IP extension
NERVE: median (C7-T1)

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48
Q

Opponens Pollicis

A

ACTION: thumb CMC opposition (via simultaneous CMC flexion, abduction, and internal rotation)
NERVE: median (C7- T1)
ulnar (terminal branch) (C8-T1)

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49
Q

Adductor Pollicis

A

ACTION: thumb CMC adduction, assists thumb MP adduction, assists thumb MP flexion
NERVE: ulnar (deep branch) (C8-T1)

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50
Q

Rectus Capitis Posterior Major

A

ACTION: capital extension, rotation of head to same side, lateral bending of head to same side
NERVE: C1 spinal nerve (dorsal rami, suboccipital nerve)

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51
Q

Obliquus Externus Abdominis

A

ACTION: Flexion of trunk (bilaterally); rotation of trunk to opposite side; ipsilateral lateral bending of trunk; tilts pelvis posteriorly
NERVE: T7-T12 (ventral rami)

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52
Q

Obliquus Internus Abdominis

A

ACTION: Flexion of trunk (bilaterally); rotation of trunk to same side; ipsilateral bending of trunk
NERVE: T7-T12, L1 (ventral rami)

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53
Q

Transverse Abdominis

A

ACTION: constricts abdomen; forced expiration
NERVE: T7-T12, L1 (ventral rami)

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54
Q

Rectus Abdominis

A

ACTION: Flexion of spine; posterior tilt
NERVE: T7-T12 (ventral rami)

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55
Q

Psoas Major

A

ACTION: Hip flexion (origin fixed); trunk flexion (insertion fixed); assist lateral trunk flexion; may assist hip ER and ABD; with insertion fixed, tightness attributes to increase lordosis
NERVE: Lumbar Plexus L2-L4

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56
Q

Semispinalis Capitus

A

ACTION: capital extension, rotation of head to opposite side, lateral bending of head to same side
NERVE: C2-T1 spinal nerves (dorsal rami), Greater occipital nerve

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57
Q

Iliacus

A

ACTION: Hip flexion; flexes pelvis on femur
NERVE: Femoral Nerve L2-L3

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58
Q

Pectineus

A

ACTION: Hip adduction; assit hip flexion
NERVE: Femoral Nerve L2-L3; Obturator nerve-Accessory branch L3

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59
Q

Gracilis

A

ACTION: Hip adduction; knee flexion; medial rotation of knee
NERVE: Obturator Nerve (L2-L3)

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60
Q

Adductor Longus

A

ACTION: Hip adduction; assit hip flexion
NERVE: Obturator nerve (L2-L4)

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61
Q

Adductor Brevis

A

ACTION:Hip adduction; hip flexion
NERVE: Obturator nerve (L2-L4)

62
Q

Spinalis Cervicis

A

ACTION: extension of cervical spine
NERVE: C3-C8 spinal nerves (dorsal rami)

63
Q

Gluteus Maximus

A

ACTION: Hip extension; hip ER; lower fibers assist hip ADD, upper fibers assist with hip ABD
NERVE: Inferior gluteal nerve (L5-S2)

64
Q

Gluteus Medius

A

ACTION: Hip ABD; hip ER (posterior fibers), hip IR (anterior fibers); anterior fibers may assist with hip flexion, posterior fibers with hip extension
NERVE: Superior Gluteal Nerve (L4-S1)

65
Q

Gluteus Minimus

A

ACTION: Hip ABD, hip IR
NERVE: Superior Gluteal Nerve (L4-S1)

66
Q

Tensor Fasciae Latae

A

ACTION: hip flexion; hip IR; hip ABD
NERVE: Superior gluteal nerve (L4-S1)

67
Q

Piriformis

A

ACTION: hip ER; assit hip ABD when hip is flexed; assist hip extension
NERVE: Nerve to piriformis/spinal nerve S1-S2

68
Q

Longus Capitis

A

ACTION: capital flexion, rotation of head to same side
NERVE: C1-C3 spinal nerves (ventral rami)

69
Q

Obturator Externus

A

ACTION: hip ER; assit hip ADD
NERVE: Obturator Nerve L3-L4

70
Q

Gemellus Superior

A

ACTION: Hip ER; assist hip ABD when hip is flexed
NERVE: Nerve to obturator internus off the lumbosacaral plexus (L5-S1)

71
Q

Geniohyoid

A

ACTION: elevation and protraction of hyoid, assist capital flexion (weak), assist mandible depression
NERVE: C1 spinal nerve (via hypoglossal/ XII nerve)

72
Q

Quadratus Femoris

A

ACTION: hip ER
NERVE: Nerve to quadratus femoris off the lumbosacral plexus (L5-S1)

73
Q

Biceps Femoris

A

ACTION: knee flexion; knee ER; hip extension and assist hip ER (long head only!)
NERVE: Long head: sciatic nerve tibial division (L5-S2)
short head: sciatic nerve peroneal division (L5-S2)

74
Q

Semitendinosus

A

ACTION: knee flexion; knee IR; hip extension; assit hip IR
NERVE: sciatic nerve tibial division (L5-S2)

75
Q

Semimembranosus

A

ACTION: knee flexion; knee IR; hip extension; assist hip IR
NERVE: sciatic nerve tibial division (L5-S2)

76
Q

Sartorius

A

ACTION: hip ER, ABD, and flexion; knee flexion and IR
NERVE: femoral nerve (L2, L3)

77
Q

Rectus Femoris

A

ACTION: knee extension; hip flexion;
NERVE: Femoral nerve (L2-L4)

78
Q

Sternothyroid

A

ACTION: cervical flexion (weak), draws larynx down, depression of hyoid, mandible, and tongue (after elevation)
NERVE: C1-C3 cervical nerves

79
Q

Vastus Intermedius

A

ACTION: knee extension
NERVE: femoral nerve (L2-L4)

80
Q

Vastus Medialis

A

ACTION: knee extension
NERVE: femoral nerve (L2-L4)

81
Q

Articularis Genu

A

ACTION: retracts synovial membrane during knee extension prevent is entrapment between patella and femur
NERVE: Femoral nerve (L2-L4)

82
Q

Popliteus

A

ACTION: knee flexion; knee IR (origin fixed); hip ER (insertion fixed)
NERVE: Tibial Nerve (L4-S1)

83
Q

Tibialis Anterior

A

ACTION: ankle dorsi flexion; Foot inversion
NERVE: Deep peroneal nerve (L4-L5)

84
Q

Tibialis Posterior

A

ACTION: foot inversion; assist plantar flexion
NERVE: Tibial nerve (L4-L5)

85
Q

Gastrocnemius

A

ACTION: ankle plantar flexion; foot inversion (supination); assist knee flexion
NERVE: Tibial Nerve (S1-S2)

86
Q

Soleus

A

ACTION: ankle plantar flexion; foot inversion (supination)
NERVE: Tibial nerve (S1-S2)

87
Q

Semispinales Thoracic

A

ACTION: extension of the thoracic spine
NERVE: spinal nerves (dorsal rami)

88
Q

Peroneus Longus

A

ACTION: Foot eversion; assist plantar flexion; depression of 1st metatarsal
NERVE: Superficial peroneal nerve (L5-S1)

89
Q

Peroneus Brevis

A

ACTION: foot eversion; assist plantar flexion
NERVE: Superficial peroneal nerve (L5-S1)

90
Q

Peroneus Tertius

A

ACTION: ankle dorsiflexion; foot eversion
NERVE: deep peroneal nerve (L5-S1)

91
Q

Extensor Digitorum Longus

A

ACTION: MP extension (toes 2-5); assit PIP and DIP extension (toes 2-5); assit ankle dorsi flexion and eversion
NERVE: deep peroneal nerve (L5-S1)

92
Q

Extensor Digitorum Brevis

A

ACTION: MP extension of toes 2-4; assist IP extension of toes 2-4; MP extension of great toe (medial slip of tendon, also called the extensor halucis brevis)
NERVE: deep peroneal nerve (L5-S1)

93
Q

Flexor Digitorum Longus

A

ACTION: MP, PIP, DIP flexion of toes 2-5; assist plantar flexion; assist inversion
NERVE: Tibial nerve (L5-S2)

94
Q

Flexor Digitorum Brevis

A

ACTION: MP and PIP flexion of toes 2-5
NERVE: Medial plantar nerve (S1-S2)

95
Q

Abductor Digiti Minimi

A

ACTION: Abduction of 5th toe; MP flexion of 5th toe
NERVE: Lateral plantar nerve (S1-S3)

96
Q

Flexor Digiti Minimi

A

ACTION: MP flexion of 5th toe
NERVE: Lateral plantar nerve (S2-S3)

97
Q

Quadratus Plantae

A

ACTION: DIP flexion of toes 2-5 (in synergy with FDL)
NERVE: Lateral plantar nerve (S1-S3)

98
Q

Lumbricales

A

ACTION: MP flexion of toes 2-5; assit PIP and DIP extension of toes 2-5
NERVE: Medial Plantar Nerve L5-S1 (1st one only)
Lateral Plantar Nerve S2-S3 (2nd, 3rd, 4th)

99
Q

Doral Interossei

A

ACTION: abduction of toes 2-4; assist MP flexion of toes 2-4; may assist IP extension of toes 2-4
NERVE: Lateral plantar nerve S2-S3 (deep peroneal nerve may also innervate 1st and 2nd)

100
Q

Plantar Interossei

A

ACTION: adduction of toes 3-5; assist MP flexion of toes 3-5; may assist IP extension of toes 3-5
NERVE: Lateral plantar nerve (S2-S3)

101
Q

Extensor Hallucis Longus

A

ACTION: Great Toe MP and IP extension; assist dorsi flexion; assist foot inversion
NERVE: Deep peroneal nerve (L5)

102
Q

Flexor Hallucis Longus

A

ACTION: Great Toe IP flexion; assist great toe MP flexion; assist ankle plantar flexion and foot inversion
NERVE: Tibial nerve (L5-S2)

103
Q

Flexor Hallucis Brevis

A

ACTION: Great toe MP flexion
NERVE: Medial plantar nerve (S1-S2)

104
Q

Abductor Hallucis:

A

ACTION: abduction of great toe; assist great toe MP flexion; assist with forefoot adduction
NERVE: Medial plantar nerve (S1-S2)

105
Q

Adductor Hallucis

A

ACTION: Great toe adduction; assist great toe MP flexion;
NERVE: Lateral plantar nerve (S2-S3)

106
Q

Rectus Capitis Posterior Minor

A

ACTION: capital extension
NERVE: C1 spinal nerve (dorsal rami, suboccipital nerve)

107
Q

Oblique Capitis Superior

A

ACTION: capital extension, lateral bending of head to same side
NERVE: C1 spinal nerve (dorsal rami, suboccipital nerve)

108
Q

Oblique Capitis Inferior

A

ACTION: rotation of head to same side, lateral bending of head to same side
NERVE: C1 spinal nerve (dorsal rami, suboccipital nerve)

109
Q

Longissimus Capitis

A

ACTION: capital extension, lateral bending and rotation of head to same side
NERVE: C3-C8 cervical nerves (dorsal rami)

110
Q

Splenius Capitis

A

ACTION: capital extension, rotation of head to same side, lateral bending of head to same side
NERVE: C3-C6 cervical nerves (dorsal rami); C1-C2 (suboccipital and great occipital nerves off first dorsal rami)

111
Q

Semispinalis Capitis

A

ACTION: capital extension, rotation of head to opposite side, lateral bending of head to same side
NERVE: C2-T1 spinal nerves (dorsal rami), Greater occipital nerve

112
Q

Spinalis Capitus

A

ACTION: capital extension
NERVE: C3- T1 spinal nerves (dorsal rami)

113
Q

Longissimus Cervicis

A

ACTION: cervical extension (bilateral action), lateral bending of cervical spine to same side (unilateral action)
NERVE: C3-T3 spinal nerves (dorsal rami)

114
Q

Semispinalis Cervicis

A

ACTION: cervical extension (bilateral action), lateral bending of cervical spine to same side (unilateral action), rotation of cervical spine to opposite side (unilateral action)
NERVE: C2-T5 spinal nerves (dorsal rami)

115
Q

Iliocostalis cervicis

A

ACTION: cervical extension (bilateral action), lateral bending of cervical spine to same side (unilateral action), assist depression of ribs
NERVE: C4-T3 spinal nerves (dorsal rami)

116
Q

Splenius Cervicis

A

ACTION: cervical extension (bilateral action), lateral bending of cervical spine to same side (unilateral action), rotation of cervical spine to same side (unilateral action)
NERVE: C4-C8 spinal nerve (dorsal rami)

117
Q

Spinalis Cervicis

A

ACTION: extension of cervical spine
NERVE: C3-C8 spinal nerves (dorsal rami)

118
Q

Interspinalis Cervicis

A

ACTION: extension of cervical spine
NERVE: C3-C8 spinal nerves (dorsal rami)

119
Q

Intertransversii Cervicis

A

ACTION: cervical extension (bilateral action), lateral bending of cervical spine to same side (unilateral action)
NERVE: C3-C8 spinal nerves (ventral rami) to anterior cervicis, C3-C8 spinal nerves (dorsal rami) to posterior cervicis

120
Q

Rotatores Cervicis

A

ACTION: rotation of cervical spine to opposite side, assist cervical extension
NERVE: C3-C8 spinal nerves (dorsal rami)

121
Q

Rectus Capitis Anterior

A

ACTION: capital flexion, stabilization of AO (OA) joint
NERVE: C1, C2 spinal nerves (ventral rami)

122
Q

Rectus Capitis Lateralis

A

ACTION: lateral bending of head to same side, capital flexion, stabilization of AO (OA) joint, assists head rotation
NERVE: C1, C2 spinal nerves (ventral rami)

123
Q

Longus Capitis

A

ACTION: capital flexion, rotation of head to same side
NERVE: C1-C3 spinal nerves (ventral rami)

124
Q

Mylohyoid

A

ACTION: raises hyoid and tongue for swallowing, depresses mandible (with hyoid fixed), assist capital flexion (weak)
NERVE: trigeminal (V) nerve

125
Q

Stylohyoid

A

ACTION: pulls hyoid up and back (in swallowing), capital flexion (weak), assists depression of mandible, participates in mastication and speech
NERVE: facial (VII) nerve

126
Q

Geniohyoid

A

ACTION: elevation and protraction of hyoid, assist capital flexion (weak), assist mandible depression
NERVE:

127
Q

Digastric

A

ACTION: mandibular depression, hyoid elevation, anterior belly draws hyoid forward, posterior belly draws hyoid backward, assist capital flexion (weak synergist)
NERVE: Anterior belly= trigeminal (V)
Posterior belly= facial (VII)

128
Q

Longus Colli

A

ACTION: cervical flexion (weak), cervical rotation to opposite, may laterally flex
NERVE: C2-C6 spinal nerves (ventral rami)

129
Q

Scalenus Anterior

A

ACTION: cervical flexion, elevates first rib in inspiration, cervical rotation to opposite side, cervical lateral bending to same side
NERVE: C4-C6 spinal nerves (ventral rami)

130
Q

Scalenus Medius

A

ACTION: cervical flexion (weak), cervical lateral bending to same side, elevates first rib in inspiration, cervical rotation to opposite side
NERVE: C3-C8 spinal nerves (ventral rami)

131
Q

Scalenus Posterior

A

ACTION: cervical lateral bending to same side, elevates second rib in inspiration, cervical rotation to opposite side
NERVE: C6-C8 spinal nerves (ventral rami)

132
Q

Sternocleidomastoid

A

ACTION: cervical flexion (bilateral action), capital extension (bilateral action), cervical lateral bending to same side (unilateral action), rotation of head to opposite side (unilateral action), raises sternum in forced inspiration
NERVE: spinal accessory (XI) C2-C3 cervical nerves (ventral rami)

133
Q

Sternothyroid

A

ACTION:

134
Q

Thyrohyoid

A

ACTION: cervical flexion, draws hyoid downward, elevates larynx and thyroid cartilage
NERVE: hypoglossal (XII); C1 spinal nerve

135
Q

Sternohyoid

A

ACTION: cervical flexion (weak), depression of hyoid
NERVE: hypoglossal (XII), C1- C3 cervical nerves

136
Q

Omohyoid

A

ACTION: depression of hyoid, cervical flexion
NERVE: hypoglossal (XII), C2-C3 cervical nerves

137
Q

Platysma

A

ACTION: cervical flexion (weak), draws lower lip down and back, assists jaw opening, assists in forced inspiration
NERVE: facial (VII) nerve

138
Q

Iliocostalis Thoracis

A

ACTION: extension of the thoracic spine, ipsilateral lateral bending of the thoracic spine
NERVE: T1-T12 spinal nerves

139
Q

Iliocostalis Lumborum

A

ACTION: extension of the lumbar spine, ipsilateral lateral bending of the lumbar spine, elevation of pelvis, depression of ribs
NERVE: L1-L5 spinal nerves (dorsal rami)

140
Q

Longissimus Thoracis

A

ACTION: extension of the thoracic spine, ipsilateral lateral bending of the thoracic spine
NERVE: T1-L1 spinal nerves (dorsal rami)

141
Q

Spinalis Thoracis

A

ACTION: extension of the thoracic spine
NERVE: T1-T12 dorsal rami

142
Q

Semispinales Thoracic

A

ACTION: extension of the thoracic spine
NERVE: spinal nerves (dorsal rami)

143
Q

Multifidi

A

ACTION: extension of the spine (in region spanned), ipsilateral lateral bending of the spine (in region spanned), rotate to opposite side (in region spanned)
NERVE: spinal nerves (dorsal rami)

144
Q

Rotatores Thoracic

A

ACTION: extension of thoracic spine, rotation of thoracic spine to opposite side
NERVE: T1-T12 spinal nerves (dorsal rami)

145
Q

Rotatores Lumborum

A

ACTION: extension of lumbar spine, rotation of lumbar spine to opposite side
NERVE: L1-L5 spinal nerves (dorsal rami)

146
Q

Interspinales Thoracis

A

ACTION: extension of thoracic spine
NERVE: T1-T12 spinal nerves (dorsal rami)

147
Q

Interspinalis Lumborum

A

ACTION: extension of lumbar spine
NERVE: L1-L5 spinal nerves (dorsal rami)

148
Q

Intertransversarii Thoracis

A

ACTION: extension of thoracic spine, ipsilateral lateral bending of the thoracic spine, rotation of thoracic to opposite side
NERVE: T1-T12, L1-L5 spinal nerves (dorsal rami)

149
Q

Intertransversarii Lumborum- medial

A

ACTION: lateral bending of lumbar spine
NERVE: lumbar and sacral spinal nerves (dorsal rami)

150
Q

Intertransversarii Lumborum- lateral

A

ACTION: extension of lumbar spine, postural stabilization
NERVE: lumbar and sacral spinal nerves (ventral rami)

151
Q

Quadratus Lumborum

A

ACTION: elevation of pelvis, extension of lumbar spine, ipsilateral lateral bending of lumbar spine, fixation and depression of 12th rib
NERVE: T12-L3 spinal nerves (ventral rami)

Dexter's Class (14 decks)

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