Two substances secreted into the proximal convoluted tubules in exchange for sodium ions.
Contractions b. In some instances, resuming more normal physical activity can reverse the effects. 7. Hypertrophy a. This is an increase in muscle size as a result of increased activity of a particular muscle. b. This is often seen in strength training. c. It results in an increase in the number of myofilaments in the muscle cells (not an increase in the number of muscle cells). V. Naming skeletal muscles A. Most of the 700 skeletal muscles are named on the basis of distinctive characteristics. If you understand some of these, it will help you remember the na