Which of the following is NOT a function of calcium in the body?

Calcium plays several crucial roles in the body, but its primary functions do not include the formation of red blood cells. Calcium is essential in various physiological processes, including muscle contraction, where it interacts with proteins in muscle cells to facilitate movement. It is also vital for the conduction of nerve impulses, as it helps release neurotransmitters that transmit signals between nerve cells. Moreover, calcium is a significant component of bones and teeth, providing structural support and strength.

In contrast, the production of red blood cells occurs mainly in the bone marrow and is largely dependent on other nutrients, particularly iron, along with vitamins like B12 and folate. Therefore, it is accurate to state that the formation of red blood cells is not a function of calcium.