The main reason why the Supreme Court case Marbury v. Madison was significant is because B. it established the power of judicial review, since this allows the Supreme Court to check the legislature. This question is archived.
Water: Why We Need It. Hydration is important because the body is comprised mostly of water, and the proper balance between water and electrolytes in our bodies really determines how most of our systems function, including nerves and muscles, says Larry Kenney, PhD, a professor of physiology and kinesiology at Penn State.
The serum electrolytes include: 1  Sodium (Na). 2  A positively charged electrolyte that helps to balance fluid levels in the body and facilitates neuromuscular functioning. 3  Potassium (K). 4  A main component of cellular fluid, this positive electrolyte helps to regulate neuromuscular function and osmotic pressure. 5  Calcium (Ca).he serum electrolytes include: 1  Sodium (Na). 2  A positively charged electrolyte that helps to balance fluid levels in the body and facilitates neuromuscular functioning. 3  Potassium (K). 4  A main component of cellular fluid, this positive electrolyte helps to regulate neuromuscular function and osmotic pressure. 5  Calcium (Ca).