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

Which gland stores hormones before their release?

High incidence of goitre is seen in the mountainous region because of

The thyroid gland is homologous to which part of lower vertebrates?

$A$ pregnant woman delivers a child who suffers from stunted growth,mental retardation,low intelligence quotient $(IQ)$,and abnormal skin. This condition is likely due to:

Give information regarding the location of the thyroid gland and its hormones.