Calcium is required for strong bones. Yet, when blood calcium levels fall, we quickly remove calcium from bone matrix. Thinking ahead to muscle contraction and neurophysiology, why are we willing to sacrifice bone density to maintain blood calcium levels?
a) Because muscle contraction requires calcium ions.
b) Because low blood calcium levels can lead to muscle weakness and nerve dysfunction.
c) Because bone density is not essential for maintaining overall health.
d) Because bone density naturally replenishes itself over time.
