Protein digestion takes place between your mouth and your small intestine. All the cells of your body contain protein, and this protein is continually broken down and remodeled to meet your growth and maintenance needs.
If you need help, here is a hintâ¦ Each year, there are over 100,000 heart valve surgeries performed in the United States. For the answer, scroll down below the picture of a diseased mitral valve with calcified valve flaps.
The heart undergoes a number of changes during the normal aging process: The heart walls, particularly the left ventricle, get thicker. The heart rate may change. Heart muscle cells may deteriorate. Abnormal heart rhythms (arrhythmias) become more common. Heart valves may thicken or leak.