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List of anatomical variations

Mundane anatomical variations in humans From Wikipedia, the free encyclopedia

List of anatomical variations
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This article provides a comprehensive list of anatomical variations, which are naturally occurring differences in human morphology. These variations are not considered defects or abnormalities but rather normal deviations that do not inherently indicate pathology.

Head and neck

Skeletal variations

Muscular variations

  • Levator glandulae thyroidea (levator muscle of thyroid gland)
  • Accessory belly of digastric muscle (see Digastric muscle)
  • Atlantomastoid muscle[1]
  • Styloauricularis muscle[2]
  • Transversus nuchae muscle
  • Pterygoideus proprius muscle
  • Levator claviculae muscle
  • Levator glandulae thyroidea muscle
  • Cleidoatlanticus muscle
  • Cleidocervical muscle
  • Cleidofascialis muscle
  • Cleidohyoideus muscle
  • Cleidomastoideus muscle
  • Cleido-occipitalis cervicalis muscle
  • Cricocorniculate muscle
  • Cricohyoid muscle (variation of thyrohyoid)
  • Sternoclavicularis anticus muscle
  • Styloauricularis muscle

Vascular variations

Nervous variations

  • Trigeminal nerve duplication
  • Aberrant facial nerve course
  • Accessory hypoglossal nerve

Other variations

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Vertebral column and ribs

Skeletal variations

Thorax

Skeletal variations

Muscular variations

Other variations

Upper limb

Skeletal variations

Muscular variations

Vascular variations

  • Alar thoracic artery
  • Median artery
  • Superficial ulnar artery
  • Variation of the basilic vein

Nervous variations

Other variations

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Lower limb

Skeletal variations

  • Femoral anteversion/retroversion
  • Os tibiale externum
  • Fabella (popliteal sesamoid)
  • Calcaneonavicular coalition
  • Accessory navicula
  • Talocalcaneal coalition
  • Cyamella (popliteal fabella)
  • Sesamoid bone of the second, third, fourth, and fifth finger
  • Talus accessorius
  • Os trigonum

Muscular variations

Vascular variations

Nervous variations

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Abdomen

Muscular variations

  • Interfoveolar muscle
  • Saphenous muscle
  • Pubotransversalis muscle

Vascular variations

Other variations

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Pelvis

Vascular variations

Other variations

References

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