Complex sentence: Likewise, inadequate calcium or vitamin D intake results in hypocalcaemia, often caused by inadequate secretion of parathyroid hormone or defective receptors to it in cells: symptoms include neuromuscular excitability, potentially causing tetany and defects in cardiac conduction.
Split into simpler sentences: Likewise, inadequate calcium or vitamin D intake results in hypocalcaemia, often caused by inadequate secretion of parathyroid hormone or defective receptors to it in cells. Symptoms include neuromuscular excitability, potentially causing tetany and defects in cardiac conduction.