Explanation:The hormone named parathyroid hormone released by parathyroid glands controls the calcium and phosphate levels in blood.whenever there is low levels of calcium in blood this hormone helps to regulate the calcium levels.
Parathormone regulates(increases) calcium and phosphate in blood.
Calcitonin helps in decreasing calcium and Phosphate in blood
Calcitonin and Parathormone therefore perform opposite functions
thyroxine hormone is the answer
bhai is not a wapp ok
tiktok users, don't have brains too
well speaking i don't there's any multicellular organism without neuron
however in the embryonic stage the neurons are yet to be developed for a growing baby(any organism)