By Michelle Andrews. + More. This week's report linking higher blood sugar levels with lower brain function in people with type 2 diabetes probably sent many people to their computers to research ways to reduce their A1C levels, a measurement of average blood sugar over time.
Making the world better, one answer at a time. Anion means the ion has a negative charge. The most common extracellular anion in the human body is chlorine. Most common cations are sodium, potassium, and calcium.
In contrast to extracellular fluid, cytosol has a high concentration of potassium ions and a low concentration of sodium ions. The extracellular fluid is mainly cations and anions. The cations include: sodium (Na+ = 136-145 mEq/L), potassium (K+ = 3.5-5.5 mEq/L) and calcium (Ca2+ = 8.4-10.5 mEq/L).