Origin, Insertion, Action

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Origin, Insertion, Action
2013-10-08 02:18:49
Anatomy Origin Insertion Action

Origin insertion and action of muscles
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  1. Pectoralis Minor
    • Origin: Ribs 3-5 
    • Insertion: Coracoid Process of scapula
  2. Trapezius
    • Origin: Occipital bone; ligamentum nuchae; spinous process of c7-t12
    • Insertion: Clavicle; acromion process and spine of scapula
  3. Latissimus Dorsi 
    (Action only)
    Extends arm
  4. Pectoralis Major (3)
    • Origin: Medial clavicle; costal cartilages of ribs 2-6; body of sternum
    • Insertion: Lateral part of intertubercular groove of Humerus
    • Action: Flexes Arm
  5. Deltoid (3)
    • Origin: Acromial end of clavicle; acromion and spine of scapula 
    • Insertion: Deltoid tuberosity of humerus 
    • Action: Abducts the arm
  6. Triceps Brachii (3/3)
    • Origin: Long Head- Infraglenoid tubercle of scapula    Lateral Head- Posterior humerus above radial groove  Medial Head- Posterior humerus below radial groove
    • Insertion: Olcranon of Ulna
    • Action: Extends forearm
  7. Supraspinatus (2)
    • Origin: Supraspinous fossa of scapula
    • Insertion: Greater tubercle of humerus
  8. Infraspinatus (2)
    • Origin: Infraspinous fossa of scapula 
    • Insertion: Greater tubercle of humerus
  9. Teres Minor
    • Origin: Upper dorsal lateral border of scapula(Superior to teres major)
    • Insertion: Greater Tubercle of humerus
  10. Biceps Brachii (2/2)
    • Origin: Long head- Supraglenoid tubercle of scapula    Short head- Coracoid process of scapula 
    • Insertion: Radial tuberosity and bicipital aponeruosis
  11. Brachialis Action
    Flexes forearm
  12. Brachioradialis (2)
    • Origin: Lateral supracondylar ridge of humerus
    • Insertion: Styloid process of radius
  13. Action of Flexor Carpi Ulnaris
    Flexes wrist
  14. Action of Extensor Digitorum
    Extends fingers
  15. Psoas Major  (2)
    • Origin: Transverse process and bodies of t12-l5 vertebra 
    • Insertion: Lesser trochanter of femur with iliacus
  16. Iliacus (2)
    • Origin: Iliac Fossa 
    • Insertion: Lesser trochanter of femur with psoas major
  17. Sartorius
    • Origin: Anterior superior iliac spine
    • Insertion: Tibial tiberosity, medial side
  18. Rectus Femoris (2)
    • Origin: Anterior inferior iliac spine
    • Insertion: Quadriceps tendon to patella and then patellar ligament to tibial tuberosity
  19. Adductor Longus (2)
    • Origin: Pubis near pubic symphysis 
    • Insertion: Linea aspera of femur
  20. Gracilis (2)
    • Origin: Inferior ramus and body of pubis
    • Insertion: Upper medial surface of tibia
  21. Tensor Fasciae Latae (2)
    • Origin: Iliac crest and lateral surface of anterior superior iliac spine 
    • Insertion: Illiotibial band
  22. Gluteus Maximus (3)
    • Origin: Iliac crest, sacrum, coccyx
    • Insertion: Illiotibial tract of fascia lata; linea aspera and gluteal tuberosity of femur
    • Action: Extends the thigh
  23. Gluteus Medius (3)
    • Origin: Posterior iliac crest; lateral surface between posterior and anterior gluteal lines 
    • Insertion: Greater trochanter of femur
    • Action: Abducts the thigh
  24. Biceps Femoris (2)
    • Origin: Long head- Ischial tuberosity   Short head- Linea aspera of femur
    • Insertion: Head of fibula
  25. Semimembranosus (2)
    • Origin: Ischial tuberosity
    • Insertion: Posterior surface of medial condyle of tibia
  26. Semitendinosus (2)
    • Origin: Ischial Tuberosity 
    • Insertion: Proximal medial surface of tibia
  27. Rectus Femoris (2)
    • Origin: Anterior inferior iliac spine 
    • Insertion: Quadriceps tendon to patella and then patellar ligament to tibial tuberosity
  28. Vastus Lateralis (2)
    • Origin: Greater trochanter and linea aspera 
    • Insertion: Quadriceps tendon to patella and then patellar ligament to tibial tuberosity
  29. Vastus Medialis (2)
    • Origin: Intertrochanteric line and linea aspera of femur
    • Insertion: Quadriceps tendon to patella and then to patellar ligament to tibial tuberosity
  30. Anterior Tibialis (3)
    • Origin: Lateral condyle and proximal shaft of tibia; interosseous membrane
    • Insertion: Metatarsal 1 and first (medial) cuneiform
    • Action: Dorsiflexion
  31. Action of Orbicularis Oculi
    Closes eyes
  32. Action of Orbicularis oris
    Purses lips
  33. Action of Zygomaticus Major
    Elevates corner of mouth
  34. Action of Masseter
    Closes jaw
  35. Action of external intercostals
    Elevates Ribs
  36. Action of internal intercostals
    Depresses ribs
  37. Action of Splenius capitis
    Extends the neck
  38. Action of Iliopsoas
    Flexes thigh
  39. Action of Quadriceps femoris group
    Extends leg (knee)
  40. Action of Hamstring group
    Flexes the leg (knee)