Adduction

Adduction is a form of movement in animal biology which brings a part of the anatomy closer to the sagittal plane of the body. The opposite of adduction is abduction.

Muscles of adduction

Upper limb

  • of arm at shoulder (lowering arm)[1]
    • Subscapularis
    • Teres major
    • Pectoralis major
    • Infraspinatus
    • Triceps brachii (caput longum)
    • Latissimus dorsi
    • Coracobrachialis
  • of hand at wrist[2]
    • Flexor carpi ulnaris
    • Extensor carpi ulnaris

Lower limb

  • of thigh at hip[5]
    • medial compartment of thigh/adductor muscles of the hip
      • Adductor longus
      • Adductor brevis
      • Adductor magnus
      • Pectineus
      • Gracilis
  • of toes (S2-S3)[6]
    • Adductor hallucis
    • Plantar interossei

Other

  • eyeball
    • Superior rectus muscle
    • Inferior rectus muscle
    • Medial rectus muscle

Adduction in Scallops

Scallops have a central adductor muscle. It lets them open and close their shells. It is quite large and developed compared to other bivalves because they swim a lot.

References

  1. ↑ "Arm and shoulder articulations". Retrieved 2011-08-15.
  2. ↑ "Wrist Articulations". Retrieved 2011-08-15.
  3. ↑ "Finger Articulations". Retrieved 2011-08-15.
  4. ↑ "Thumb Articulations". Retrieved 2011-08-15.
  5. ↑ "Hip Articulations". Retrieved 2011-08-15.
  6. ↑ "Foot Articulations". Retrieved 2011-08-15.


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