Anatomy of the Heart. Your heart is located under your ribcage in the center of your chest between your right and left lungs. Its muscular walls beat, or contract, pumping blood to all parts of your body. The size of your heart can vary depending on your age, size, and the condition of your heart.
In anaerobic respiration, NADH loses its electrons to other molecules in the process of fermentation for the purpose of regenerating the NAD+ needed to continue oxidizing organic molecules to produce ATP by substrate-level phosphorylation.
The product of this pathway is carbon dioxide and water and energy in the form of ATP. Most of the ATP produced by aerobic respiration is made by oxidative phosphorylation. Aerobic respiration takes place in three stages glycolysis, TCA cycle and electron transport chain. Glycolysis - In glycolysis molecules of glucose in the cytoplasm are broken into molecules of pyruvate. One glucose molecule yields two molecules of pyruvate.