When you exhale, or breathe out, the process happens in reverse. The diaphragm, which had contracted and moved down, now relaxes
and moves back up. The ribs contract, creating a smaller space in the chest. After the body has used the oxygen it needs, the blood carries carbon dioxide and other waste products. Blood comes back to the capillaries, and the waste products enter the alveoli. Then they are breathed out through the bronchioles, bronchi, trachea and finally the nose and mouth. What happens to the rib cage when you exhale?
Triglycerides are the main substance of body fat found in humans and other vertebrates. These are esters derived from glycerol and fatty acids. High amounts of triglycerides are dangerous for heart health.
