The primary function of the thyroid gland is to regulate..........

Name the disease in which a child shows symptoms like low $BMR$,thick tongue,prolonged neonatal jaundice,lethargy and constipation.

Name the endocrine gland that produces calcitonin and mention the role played by this hormone.

On an educational trip to Uttaranchal,Ketki and her friends observe that many local people have swollen necks. Please help Ketki and her friends to find out the solutions to the following questions.
$(a)$ Which probable disease are these people suffering from?
$(b)$ How is it caused?
$(c)$ What effect does this condition have on pregnancy?

Which of the following trace elements is involved in the structure of a hormone?

Which gland regulates the $BMR$ and body temperature?