The medial meniscus and lateral meniscus are specialized structures within the knee. These crescent-shaped shock absorbers between the tibia and femur have an important role in the function and health of the knee.
Specialization of labor is a powerful force in an economy, benefiting small and large businesses alike. Workers produce more when they occupy specialized roles, so businesses can offer higher quality products at lower prices.
The specialization which accompanies the division of labour has important geographical consequences, for it necessitates communi 1 On the influence of land on people see Shaler, Nature and Man in America (New York and London, 1892); and Ellen C. Semple's American History and its Geographic Conditions (Boston, 3903).