A&P

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  1. Sternocleidomastoid
    ACTION
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    Bilateral: Flexion of neck, extension of head.

    Unilateral: Lateral flexion of neck and head to same side. Rotation of neck and head to opposite side.
  2. Trapezius
    ACTION
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    Entire muscle: Retracts and upwardly rotates scapula.

    Upper trap: elevates scapula, extends head.

    Lower trap: depresses scapula.
  3. Rhomboideus Major
    ACTION
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    Retracts and downwardly rotates scapula.
  4. Levator Scapulae
    ACTION
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    Elevates, retracts and downwardly rotates scapula.
  5. Latissimus Dorsi
    ACTION
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    Extends, adducts and medially rotates humerus.

    Known as the "hand cuff muscle"
  6. Pectoralis Major
    ACTION
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    • Entire muscle adducts and medially rotates humerus.
    • Clavicular head: flexes humerus.
    • Sternal head: extends humerus.

    "Forehand muscle in tennis"
  7. Deltoid
    ACTION
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    • Entire muscle: abducts humerus.
    • Anterior deltoid: flexes and medially rotates humerus.
    • Posterior deltoid: extends and laterally rotates humerus.
  8. Triceps Brachii
    ACTION
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    Extends arm and forearm
  9. Biceps Brachii
    ACTION
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    • Flexes arm.
    • Flexes and supinates forearm
  10. Brachioradialis
    ACTION
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    Flexes forearm
  11. Rectus Abdominis
    ACTION
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    Flexes trunk
  12. External Oblique
    ACTION
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    Flexes, laterally flexes and rotates trunk. Compresses abdomen.
  13. Quadratus Lumborum
    ACTION
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    Lateral flexion of lumbar spine

    "Hip Hiker"
  14. Psoas Major
    ACTION
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    • Flexion and lateral rotation of thigh.
    • Lateral flexion of lumbar spine
    • Adducts thigh
  15. Gluteus Maximus
    ACTION
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    • Extension of thigh.
    • Assists in lateral rotation and abduction of thigh
  16. Tensor Fascia Latae
    ACTION
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    • Assists in abduction flexion and medial rotation of thigh.
    • Stabilizes hip and knee joints.
    • Just an assister - REAL job is to stabilize hip and knee via IT band
  17. Biceps femoris
    ACTION
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    • Extension of hip.
    • Flexion of knee.
  18. Semitendinosus
    Semimembranosus
    ACTION
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    • Extension of hip
    • Flexion of knee
    • "Mule kick"
  19. Rectus Femoris
    ACTION
    • Flexion of hip
    • Extension of knee
    • "Kicking a ball"
  20. Sartorius
    ACTION
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    • Assists in flexion of knee
    • Assists in flexion, abduction of lateral rotation of hip
  21. Gracilis
    ACTION
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    Adduction of hip
  22. Tibialis Anterior
    ACTION
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    Dorsiflexion and inversion of foot
  23. Peroneus Longus
    ACTION
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    Plantar flexion and eversion of foot
  24. Gactrocnemius
    ACTION
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    • Plantar flexion of foot
    • Assists in flexion of knee
  25. Soleus
    ACTION
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    Plantar flexion of foot
Author:
MamaRica
ID:
37977
Card Set:
A&P
Updated:
2010-09-28 15:04:15
Tags:
Muscle Exam Big twenty something
Folders:

Description:
Actions of the big twenty something
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