The following events will happen in response to hypocalcemia

The following events will happen in response to hypocalcemia except: a) Release of calcitonin by the thyroid gland. b) Release of parathyroid hormone(PTH) by the parathyroid gland. c) Synthesis of vitamin D by the kidneys. d) Absortion of calcium from the gastrointestinal tract. d) Reabsortion of calcium at the kidney.

Solution

a) Release of calcitonin by the thyroid gland. ----> FLASE (during hypocalcemia, PTH is released)

Calcitonin is an endocrine hormone secreted by the parafollicular cells of the thyroid gland and it is involved in the metabolism of calcium and phosphorus, calcitonin has opposite effects to that of PTH (parathyroid hormone).

High plasma concentrations of calcium stimulate the calcitonin release. Calcitonin decreases the blood calcium levels, so that the stimulus triggering its release also suppress. This is a negative feedback regulation.

Parathyroid hormone (PTH) is secreted by the parathyroid gland, PTH increases the calcium levels of plasma and extra cellular fluid by increasing the absorption of calcium from gastrointestinal tract, renal tubules, and by increasing the calcium desorption from bones.