Muscles

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ljblmt79
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221095
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Muscles
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2013-05-25 16:46:35
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Muscles Info
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  1. Upper Trapezius
    O: Occipital bone, nuchal ligament on upper cervical spinous processes

    I: Outer 1/3 of clavicle, acromion process

    A: Scapular Elevation, Upward Rotation

    N: Spinal Accessory Nerve (CN#11)
  2. Middle Trapezius
    O: Spinous Processes of C7-T3

    I: Scapular Spine

    A: Scapular Retraction

    N: Spinal Accessory Nerve (CN#11)
  3. Lower Trapezius
    O: Spinous processes of middle and lower thoracic vertebrae

    I: Base of scapular spine

    A: Scapular Depression, Upward Rotation

    N:  Spinal Accessory Nerve (CN#11)
  4. Levator Scapulae
    O:  Transverse processes of first 4 cervical vertebrae

    I:  Vertebral border of scapula b/t superior angle & spine

    A:  Scapular elevation, downward rotation

    N:  Dorsal Scapular Nerve (C5)
  5. Rhomboids
    O:  Spinous processes of C7-T5

    I:  Vertebral broder of scapula b/t spine & inferior angle

    A:  Scapular Retraction, elevation, downward rotation

    N:  Dorsal Scapular Nerve (C5)
  6. Serratus Anterior
    O:  Lateral surface of upper 8 ribs

    I:  Vertebral border of scapula, anterior surface

    A:  Scapular protraction, upward rotation

    N:  Long Thoracic Nerve (C5, C6, C7)
  7. Pectoralis Major
    O:  Anterior Surface, 3-5 ribs

    I:  Coracoid process of scapula

    A:  Scapular depression, protraction, downward rotation and tilt

    N:  Medial Pectoral Nerve (C6, C7, C8, T1)
  8. Anterior Deltoid
    O: Lateral 1/3 of clavicle

    I:  Deltoid Tuberosity

    A:  SH abd, flexion, medial rotation, horizontal add

    N:  Axillary Nerve (C5, C6)
  9. Middle Deltoid
    O:  Acromion Process

    I:  Deltoid Tuberosity

    A:  SH abd

    N:  Axillary Nerve (C5, C6)
  10. Posterior Deltoid
    O:  Spine of Scapula

    I:  Deltoid Tuberosity

    A: SH abd, extension, hyperextension, lateral rotation, horizontal abd

    N: Axillary Nerve (C5, C6)
  11. Pectoralis Major
    • Clavicular Portion
    • O: Medial 1/3 of clavicle
    • I: Lateral lip of bicipital groove of humerus
    • A: SH flexion - first 60
    • N:  Lateral & Medial Pectoral Nerve
    • (C5, C6, C7)

    • Sternal Portion
    • O: Sternum, costal cartilage of first six ribs
    • I: Lateral lip of bicipital groove of humerus
    • A: SH extension - first 60 (180-120)
    • N:  Lateral & Medial Pectoral Nerve
    • (C5, C6, C7)

    • Both
    • A: SH add, medial rotation, horz add
  12. Latissimus Dorsi
    O: Spinous Processes of T7-L5 (via dorsolumbar fascia), post surface of sacrum, iliac crest, lower 3 ribs

    I:  Medial floor of bicipital groove of humerus

    A:  SH ext, add, med rot, hyperext

    N: Thoracodorsal Nerve (C6, C7, C8)
  13. Teres Major
    O:  Axillary border of scapula near the inferior angle

    I: Crest below lesser tubercule inferior to lats muscle attachment

    A: SH ext, add, med rot

    N: Lower Subscapular Nerve (C5, C6, C7)
  14. Supraspinatus
    O:  Supraspinatus fossa of scapula

    I: Greater tubercule of humerus

    A:  SH abd

    N:  Suprascapular Nerve (C4, C5, C6)
  15. Infraspinatus
    O: Infraspinatus

    I:  Greater tubercule of humerus

    A:  SH lat rot, horz abd

    N:  Suprascapular Nerve (C4, C5, C6)
  16. Teres Minor
    O:  Axillary border of scapula

    I:  Greater tubercule of humerus

    A:  SH lat rot, horz abd

    N: Axillary Nerve (C5, C6)
  17. Subscapularis
    O: Suprascapular fossa of scapula

    I: Lesser tubercule of humerus

    A: SH med rot

    N: Upper & Lower Subscapular Nerve (C5, C6, C7)
  18. Coracobrachialis
    O: Coracoid Process of scapula

    I:  Medial Surface of humerus near midpoint

    A: Stabilizes shoulder joint

    N: Musculocutaneous Nerve (C5, C6)
  19. Brachialis
    O: Distal half of humerus, anterior surface

    I:  Corocoid process and ulnar tuberosity of ulna

    A:  Elbow Flexion

    N:  Musculocutaneous Nerve (C5, C6)
  20. Biceps Brachii
    • O: Long head: supraglenoid tubercule of scapula
    •     Short head: coracoid process of scapula

    I: Radial tuberosity of radius

    A: Elbow flexion, forearm supination, assist with GH flexion

    N: Musculocutaneous Nerve (C5, C6)
  21. Brachioradialis
    O: Lateral supracondylar ridge of humerus

    I:  Styloid process of the radius

    A:  Elbow flexion

    N: Radial Nerve
  22. Triceps
    • O:  Long Head:  Infraglenoid tubercule of scapula
    •      Lateral Head: Inferior to greater tubercule on post humerus
    •      Medial Head: Posterior process of ulna

    I: Olecranon process of ulna

    A: Elbow flexion

    N: Radial Nerve (C6, C7, C8, T1)
  23. Anconeus
    O: Lateral epicondyle of humerus

    I: Lateral & inferior to olecranon process of ulna

    A:  Not a prime mover in any joint action, assists in elbow extension

    N: Radial Nerve (C6, C7, C8, T1)
  24. Pronator Teres
    O: Medial epicondyle of humerus & coronoid process of ulna

    I:  Lateral aspect of radius at its midpoint

    A: Forearm pronation, assistive in elbow flexion

    N:  Medial Nerve (C6, C7, C8, T1)
  25. Pronator Quadratus
    O: Distal 1/4 of ulna

    I: Distal 1/4 of radius

    A: Forearm pronation

    N: Median Nerve (C6, C7, C8, T1)
  26. Supinator
    O: Lateral epicondyle of humerus & adjacent ulna

    I:  Anterior surface of proximal radius

    A:  Forearm supination

    N: Radial Nerve (C6, C7, C8, T1)
  27. Flexor Carpi Ulnaris
    O: Medial Epicondyle

    I:  Pisiform & Base of 5th Metacarpal

    A:  Wrist Flexion & Ulnar Deviation

    N: Ulnar Nerve (C8, T1)
  28. Flexor Carpi Radialis
    O: Medial Epicondyle

    I: Base of 2nd & 3rd Metacarpal

    A:  Wrist flexion & radial deviation

    N:  Median Nerve (C6, C7, C8, T1)
  29. Palmaris Longus
    O: Medial Epicondyle

    I: Palmar Fascia

    A: Wrist Flexion

    N: Median Nerve (C6, C7, C8, T1)
  30. Extensor Carpi Radialis Longus
    O: Supracondyar Ridge

    I: Base of 2nd Metacarpal

    A: Wrist Extension & Radial Deviation

    N: Radial Nerve (C6, C7, C8, T1)
  31. Extensor Carpi Radialis Brevis
    O: Lateral Epicondyle

    I: Base of 3rd Metacarpal

    A:  Wrist Extension

    N: Radial Nerve (C6, C7, C8, T1)
  32. Extensor Carpi Ulnaris
    O: Lateral Epicondyle

    I: Base of 5th Metacarpal

    A:  Wrist Extension & Ulnar Deviation

    N:  Radial Nerve (C6, C7, C8, T1)
  33. Flexor Digitorium Superficialis
    O: Common Flexor Tendon

    I: Sides of middle phalanx of 4 digits (2-5)

    A: MCP & PIP Flexion

    N: Median Nerve (C6, C7, C8, T1)
  34. Flexor Digitorum Profundus
    O:  Proximal 3/4 of ulna

    I:  Distal phalanx of 4 digits (2-5)

    A: MCP, PIP, DIP

    • N: Median Nerve (C6, C7, C8, T1)
    •     Ulnar Nerve (C8, T1)
  35. Flexor Pollicis Longus
    O:  Anterior Radius

    I:  Distal Phalanx of Thumb

    A:  Thumb CMC, MCP, IP flexion

    N:  Median Nerve (C6, C7, C8 , T1)
  36. Abductor Pollicis Longus
    O: Posterior radias, interosseous membrane, middle ulna

    I:  Base of 1st metacarpal

    A:  Abducts thumb CMC

    N: Radial Nerve (C6, C7, C8, T1)
  37. Extensor Pollicis Brevis
    O: Posterior Distal Radius

    I:  Base of Proximal Phalanx of Thumb

    A:  Thumb CMC & MCP extension

    N:  Radial Nerve (C6, C7, C8, T1)
  38. Extensor Pollicis Longus
    O:  Middle Posterior Ulna & Interosseous Membrane

    I:  Base of distal phalanx of thumb

    A: Thumb CMC, MCP, IP extension

    N:  Radial Nerve (C6, C7, C8, T1)
  39. Extensor Digitorum
    O: Lateral Epicondyle

    I:  Base of Distal Phalanx of Digits 2-5

    A:  Digit 2-5 MCP, PIP & DIP extension

    N: Radial Nerve (C6, C7, C8, T1)
  40. Extensor Indicis
    O: Distal Ulna

    I:  Base of distal phalanx of 2nd digit

    A: 2nd digit MCP, PIP & DIP extension

    N:  Radial Nerve (C6, C7, C8, T1)
  41. Extensor Digiti Minimi
    O:  Lateral Epicondyle

    I:  Base of distal phalanx of 5th digit

    A:  5th digit MCP, PIP & DIP extension

    N: Radial Nerve (C6, C7, C8, T1)
  42. Iliacus
    O: Iliac fossa

    I:  Lesser trochanter

    A: Hip flexion & lumbar extension

    N: Femoral Nerve (L2, L3, L4)
  43. Psoas Major
    O: T12-L5 Lumbar bodies, transverse processes & discs

    I:  Lesser Trochanter

    A: Hip Flexion, lumbar extension

    N:  Femoral Nerve (L2, L3, L4)
  44. Rectus Femoris
    O:  AIIS

    I:  Tibial tuberosity via patellar tendon

    A:  Hip flexion, knee flexion

    N:  Femoral Nerve (L2, L3, L4)
  45. Sartorius
    O:  ASIS

    I:  Pes Anserine

    A: hip flexion, ER, abd, knee flexion

    N:  Femoral Nerve (L2, L3, L4)
  46. Pectineus
    O: Superior Ramus of Pubis

    I:  Pectineal line of femur

    A: Hip flexion, adduction

    N: Femoral Nerve (L2, L3, L4)
  47. Adductor Longus
    O: Pubis

    I: Linea Aspera

    A: Hip Adduction

    N: Obturator Nerve (L2, L3, L4)
  48. Adductor Brevis
    O: Pubis

    I: Pectineal line of femur & linea aspera

    A:  Hip Adduction

    N: Obturator Nerve (L2, L3, L4)
  49. Adductor Magnus
    O:  Ishium & Pubis

    I:  Linea aspera & adductor tubercule

    A:  Hip adduction & hip flexion

    N:  Obturator Nerve & Scatic Nerve
  50. Gracilis
    O:  Pubis

    I:  Pes Anserine

    A: Hip Adduction & knee flexion

    N: Obturator Nerve (L2, L3, L4)
  51. Gluteus Maximus
    O: Posterior Sacrum, coccyx, ilium

    I: Posterior femur (distal to gr. trochanter & IT band)

    A: Hip extension, hyperextension, ER

    N:  Inferior Gluteal Nerve (L5-S2)
  52. Gluteus Medius
    O:  Outer surface of ilium

    I:  Great trochanter

    A: Hip Abd, IR

    N: Superior Gluteal Nerve (L4-S1)
  53. Gluteus Minimus
    O:  Lateral ilium

    I:  Greater Trochanter

    A: Hip abd, IR

    N: Superior Gluteal Nerve (L4-S1)
  54. Semimembranosus
    O: Ischial Tuberosity

    I:  Posterior surface of tibial medial condyle

    A: Hip extension, knee flexion

    N:  Sciatic Nerve (L4-S3)
  55. Semitendinosus
    O: Ischial Tuberosity

    I: Pes Anserine

    A: Hip extension, knee flexion

    N: Sciatic Nerve (L4-S3)
  56. Biceps Femoris
    • O:  Long Head:  Ischial Tuberosity
    •      Short Head:  linea aspera

    I: Fibular Head

    A: Hip Extension, knee flexion (long head only)

    N: Sciatic Nerve (L4-S3)
  57. Tensor Fasciae Latae
    O: ASIS

    I: Lateral condyle of tibia via IT band

    A: Hip flexion, IT, abd

    N: Superior Gluteal Nerve (L4-S1)
  58. Vastus Lateralis
    O:  Linea aspera

    I:  Tibial tuberosity via patellar tendon

    A:  Knee extension

    N: Femoral Nerve (L2-4)
  59. Vastus Medialis
    O:  Linea aspera

    I:  Tibial tuberosity via patellar tendon

    A:  Knee extension

    N:  Femoral Nerve (L2-4)
  60. Vastus Intermedialis
    O:  Anterior Femur

    I:  Tibial tuberosity via patellar tendon

    A: Knee extension

    N: Femoral Nerve (L2-4)
  61. Popliteus
    O: Lateral Condyle of femur

    I: Posterior Medial condyle of tibia

    A: Initiates knee flexion (unlocking screw home mechanism)

    N:  Tibial Nerve (L4-S3)
  62. Gastrocnemius
    O:  Medial & Lateral femoral condyles

    I: Posterior calcaneous via Achilles

    A: Knee flexion, talocrural plantar flexion

    N: Tibial Nerve (L4-S3)
  63. Soleus
    O: Posterior Tibia & Fibula

    I:  Posterior calcaneous via Achilles

    A: Talocrural Plantar Flexion

    N: Tibial Nerve (L4-S3)
  64. Tibialis Anterior
    O: Lateral tibia  & interosseous membrane

    I: First cuneiform & first metatarsal

    A: Subtalar inversion & talocrual dorsiflexion

    N: Deep Peroneal Nerve (L4-S3)
  65. Tibialis Posterior
    O: Interosseous membrane & adjacent tibia/fibula

    I: Navicular & most tarsals & metatarsals (9 points of insertion)

    A: Subtalar inversion & talocrural plantar flexion

    N: Tibial Nerve (L4-S3)
  66. Flexor Hallucis Longus
    O: Posterior fibula & interosseous membrane

    I: Distal phalanx of great toe

    A: Flexes great toe, assists in subtalar inversion & talocrural plantarflexion

    N: Tibial Nerve (L4-S3)
  67. Flexor Digitorum Longus
    O: Posterior Tibia

    I: Distal phalanx of 4 toes

    A: Flexes 4 toes, assists in subtalar inversion & talocrural plantar flexion

    N:  Tibial Nerve (L4-S3)
  68. Extensor Hallucis Longus
    O: Fibula & interosseous membrane

    I: Distal phalanx of great toe

    A: Extends great toe, assists in subtalar inversion & talocrural dorsiflexion

    N: Deep Peroneal Nerve (L4-S3)
  69. Extensor Digitorum Longus
    O: Fibula & interosseous membrance & tibia

    I: Distal phalanx of 4 toes

    A: Extends 4 toes, assists in talocrural dorsiflexion

    N: Deep Peroneal Nerve (L4-S3)
  70. Peroneus Longus
    O: Lateral proximal fibula & interosseous membrane

    I: Plantar surface of first cuneiform & metatarsal

    A: Subtalar eversion & assists in talocrural plantar flexion

    N: Superficial Peroneal Nerve (L4-S3)
  71. Peroneus Brevis
    O: Lateral distal fibula

    I: Base of 5th metatarsal

    A: Subtalar eversion & assists in talocrural plantar flexion

    N:  Superficial Peroneal Nerve (L4-S3)
  72. Peroneus Tertius
    O: Distal Medial fibula

    I: Base of 5th Metatarsal

    A: Assists in subtalar eversion & talocrural dorsiflexion

    N: Deep Peroneal Nerve (L4-S3)
  73. Sternocleidomastoid
    O:  Sternum & clavicle

    I: Mastoid Process

    • A: Unilaterally - ipsilateral side bending, contralateral rotation
    •      Bilaterally - cervical flexion, capital extension

    N: Spinal Accessory Nerve (CN #11)
  74. Scalenes
    O: Transverse processes of cervical vertebrae

    I: Ribs 1-2

    • A: Unilaterally - ipsilateral cervical side bending
    •      Bilaterally - cervical flexion
  75. Multifidus
    O: Transverse Processes of spine

    I:  Spinous Processes 2-4 levels above origin

    • A:  Unilaterally - Ipsilateral side bending, contralateral rotation
    •      Bilaterally - extends the spine, maintains neurtral spine, resists flexion
  76. Transverse Abdominis
    O: Inguinal Ligament, iliac crest, thoracolumbar fascia, ribs 7-12

    I:  Abdominal Aponeurosis & line alba

    A: Compression of abdomen (stability) fires anticipatory
  77. Quadratus Lumborum
    O:  Iliac crest

    I: 12th rib & transverse processes of lumbar vertebrae

    A: Lumbar lateral flexion (side bending), lumbar extension, ipsilateral hip hiking
  78. Erector Spinae
    O & I: Spinous processes, transverse processes, posterior ribs from occiput to sacrum/ilium

    • A: Unilaterally - ipsilateral side bending
    •     Bilaterally - extend trunk, resist flexion
  79. Rectus Abdominis
    O: Pubis

    I: Xiphoid Process & costal cartilage of ribs 5-7

    A: Trunk Flexion, Posterior Pelvic Tilt, resists extension
  80. External Obliques
    O: Ribs 5-12

    I: Iliac Crest & linea alba

    • A: Bilaterally - trunk flexion
    •     Unilaterally - ipsilateral side bending, contralateral rotation
  81. Internal Obliques
    O: Inguinal ligament, iliac crest, thoracolumbar fascia

    I: Ribs 10-12, abdominal aponeurosis

    • A: Bilaterally - trunk flexion
    •     Unilaterally - ipsilateral side bending, ipsilateral rotation

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