The function of the human skeleton mentioned in the text is 'Producing blood cells.'
The human skeleton is a vital component of the body, primarily known for its structural role. Among its various functions, the production of blood cells takes place within the bone marrow, a soft tissue inside bones. This process, known as hematopoiesis, is essential for generating red blood cells, white blood cells, and platelets. Red blood cells are crucial for transporting oxygen throughout the body, white blood cells are key to the immune system, and platelets aid in blood clotting.
Bone health, as mentioned, can be influenced by factors including diet and exercise, with the skeleton being critical not only for structure and protection but also for this important biological function of blood cell production.