Norepinephrine performs its actions on the target cell by binding to and activating adrenergic receptors. The target cell expression of different types of receptors determines the ultimate cellular effect, and thus norepinephrine has
While specific vitamins and minerals do not cause muscle cramps, a deficiency in potassium or magnesium can lead to sports-related leg cramping, according to Everyday Health. Additionally, a deficiency in vitamins E, A, and B causes cramping due to reduced circulation, as explained WeightTraining.com. Keep Learning.
The lack or excess of it contributes to the problem. In toe or leg cramps the culprit is the lack of calcium, potassium and sodium in our body. Ninety-nine percent of calcium can be located in bones and teeth. The smaller portion of calcium can be found in the blood, which helps in muscle contraction.