And in this reduction in materials cost for the manufacturer, the life expectancy of the furniture is greatly diminished. By as much as 75%, depending on usage patterns. Recliners are the most common type of furniture for leather and vinyl match.
Three sets of bones protect the internal organs:   The skull protects the brain  The rib cage, anchored by the sternum and vertebral column,  protects the heart, lungs, kâ¦idneys, liver, and spleen.  The pelvis protects the urinary and reproductive organs, as  well as the lower part of the intestines   .
The major organs of the immune system are bone marrow, thymus, spleen and lymph nodes. These organs produce lymphocytes required to destroy bacteria, virus, tumor cells, etc.This article dwells on these major immune system organs that protect the human body from infections. cells that evoke a detrimental autoimmune response get eliminated. Spleen: This organ of the immune system is composed of T-cells, B-cells, natural killer cells, macrophages, dendritic cells and red blood cells.