You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Secondary hyperparathyroidism due to Vit D deficiency shows : and explain in detail?
C i.e. Hypophosphatemia PTH increases phosphate excretion in urineQ. This phosphaturic action is due to decreased reapsorption of phosphate in distal tubules. Secondary Hyperparathyroidism d/t -Vit D deficiency - This results from decreased serum Ca2+. - The released parathyroid hormone directs its activity to increase serum Ca2+ at the cost of of loss of phosphate from the body - hypophosphatemiaQ. - PTH mobilizes both Ca2+ & phosphate from the bone to increased level of both in blood initially, while it reabsorbs the filtered Ca2+ from renal tubules, it fails to reabsorb phosphate which is lost in urine.