Categories Uncategorized

I.1.5.8 Skeletal changes due to erect posture and its implications

  1. Skull- skull well balanced on first vertebra, foramen magnum centrally placed
  2. Vertebral column – elastic ligaments between vertebral lamina, four alternative curves, extensor n spinal muscles in de direction of spinal process
  3. Thorax- transverse diameter more than dorsoventral diameter
  4. Pelvis- ileum has become short, sacral part enlarged, head of femur enlarged, acetabulum thicker n larger, n it is centrally placed
  5. Limbs- kegs longer than arms to withstand body weight
  6. Femur – muscle attachments and ridges more sharply defined. Linea aspera is a characteristic feature of humans
  7. Foot- less opposibility of graat toe, shock absorbing arches, medial and lateral arches, calcaneum larger and stronger, wedge shaped development of other tarsal bones

Leave a Reply