A man interested in losing weight and increasing his fitness followed a strict diet and exercise regimen for three months. Body
fat analysis indicated that the man had lost 7 kg (about 15 pounds) of fat by following this exercise and diet program. What is the most likely form by which the fat left his body? a) It was converted to ATP, which weighs much less than fat. b) It was converted to heat, which was released to the environment. c) It was released as CO2 and H2O.
During the weight loss process, cellular mitochondria transform the energy reserve arranged as body fat into heat, ATP, water and carbon dioxide. Therefore, none of these forms is "more likely", and fat loss occurs as a result of the release of all these products from cellular metabolism.
The hyoid bone is the only bone in humans that does not articulate with any other bone, but only has muscular, ligamentous, and cartilaginous attachments