Select the correct combination:
$(1)$ Thymus - Thymosin
$(2)$ $PTH$ - $Ca^{+2}$ absorption
$(3)$ Adrenal - Glucocorticoids
$(4)$ Thyroid - Anti-inflammatory response

Match the following hormones with the respective diseases:

$(a)$ Insulin	$(i)$ Addison's disease
$(b)$ Thyroxin	$(ii)$ Diabetes insipidus
$(c)$ Corticoids	$(iii)$ Acromegaly
$(d)$ Growth Hormone	$(iv)$ Goitre
	$(v)$ Diabetes mellitus

Select the correct option.

Give scientific reasons:
$(1)$ Hormones are regulatory chemicals.
$(2)$ Less secretion of thyroxine results in stunted growth of a person.
$(3)$ Deficiency of insulin results in diabetes mellitus.
$(4)$ Pancreas is an exocrine and endocrine gland.

Which of the following is the correct match for the hormone and its associated organ?

Arrange the following events in the correct sequence for the regulation of blood sugar level:
$(i)$ Increase in blood sugar level
$(ii)$ Increase in circulating glucagon
$(iii)$ Release of glucose from glycogen
$(iv)$ Decrease in blood sugar level

Consider the following statements about insulin:
$I$. Human insulin is made up of $51$ amino acids arranged in two polypeptide chains.
$II$. The two polypeptide chains are interconnected by two disulphide bridges.
$III$. In mammals,including humans,insulin is synthesized as a pro-hormone,which contains an extra stretch called the $C$-peptide.
$IV$. $C$-peptide is not present in the mature insulin.
Which of the statements given above are correct?