Calcium ion
A
Is essential for blood coagulation
B
Deficiency causes neuromuscular excitability
C
Deficiency causes the heart to go into spastic contraction
D
Reabsorption from kidney is increased by calcitonin
E
Reabsorption from bone is increased by parathyroid hormone
Correct Answer: Is essential for blood coagulation, Deficiency causes neuromuscular excitability