Identify the structure in the given below.

Which element is crucial for the normal functioning of the thyroid gland?

Which hormone reduces the secretion of the gastric hormones?

Which of these is not a function of PTH?

Which hormone is responsible for regulating the osmotic pressure and body fluid volume?

Which of these hormones stimulates the secretion of bile?

Which of these hormones is released by the pars nervosa?

Graves’ disease is caused by __