Potassium ions are the principal cations found inside cells in the body. Bananas, orange juice, and potatoes are good sources of Potassium ions help regulate cellular functions, including nerve impulses and heartbeats, and the level of body fluids. Chloride ions are the principal anions found outside cells in the body.
There are five primary macronutrients: protein, fat, vitamins, minerals and carbohydrate. Macronutrients are defined as a class of chemical compounds which humans consume in the largest quantities (must be above a threshold amount) and which provide humans with the bulk of energy.
Micronutrients are what are commonly referred to as vitamins and minerals.. Micronutrients include such minerals as flouride, selenium, sodium, iodine, copper and zinc. They also include vitamins such as vitamin C, A, D, E and K, as well as the B-complex vitamins. As mentioned, micronutrients are different from the macronutrients protein, carbohydrate and fat, and micronutrients are called micro-nutrients because your body needs only very small quantities of them for survival.