Why does hypocalcaemia cause tetany?

Calcium plays a key role in nerve and muscle function, enzyme function, and
mineral balance in bone.

Calcium affects nerve and muscle excitability, neurotransmitter
release from axon terminals, and excitation–
contraction coupling i

There are several postulated mechanisms for this. Not having an elucidated mechanism for tetany leads to confusion and speculation. As a matter of fact, although Miss Ibrahim's answer was well structured, it lacks the exact mechanism of divalent ca

That was beautiful. I wish more explanations were explained the way you did. Plus, no bashing of previous comments but rather complimentary to the previous comment. wow.