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.
1. Spinach. Spinach is high in amino acids and actually has 5 grams of protein per cup. Spinach is also a rich source of the minerals calcium, magnesium, and potassium which all lower blood pressure levels, and it is a good source of fiber to help lower blood sugar. Fiber, protein and minerals are three wonderful components that help balance insulin levels and help the body feel more nourished.