a narrow opening produced by cleavage or separation of parts. 2. cleavage (def 1). 3. Anatomy. a natural division or groove in an organ, as in the brain. verb (used with object), fissured, fissuring. 4. to make fissures in; cleave; split.
A diet rich in potassium helps to counterbalance some of sodium's harmful effects on blood pressure. Foods that are good sources of potassium are listed in the Food Sources of Potassium table on the next page.
Although sodium is as a nutrient we need to limit, your body does need sodium to function properly. Sodium is involved in your muscles, nerves, blood pressure regulation and blood volume.Sodium is found naturally in many foods, but natural sodium makes up a small percentage of sodium intake in America.People adding salt to their meals encompasses another small percentage, and the rest comes from sodium added to processed foods, according to the 2010 USDA Dietary Guidelines for Americans.lthough sodium is as a nutrient we need to limit, your body does need sodium to function properly. Sodium is involved in your muscles, nerves, blood pressure regulation and blood volume.