Select the odd one out.

Which of the following is called the "biological middleman"?

Identify which of the following are endocrine glands?
$I.$ Liver,$II.$ Salivary gland
$III.$ Pituitary gland,$IV.$ Thyroid
Choose the correct option.

Fill in the blanks:
$Hormones$ $Target$ $gland$
$(a)$ $Hypothalamic$ $hormones$ .....................
$(b)$ $Thyrotrophin$ $(TSH)$ .....................
$(c)$ $Corticotrophin$ $(ACTH)$ .....................
$(d)$ $Gonadotrophins$ $(LH, FSH)$ .....................
$(e)$ $Melanotrophin$ $(MSH)$ .....................

Give example$(s)$ of:
$(a)$ Hyperglycemic hormone and hypoglycemic hormone
$(b)$ Hypercalcemic hormone
$(c)$ Gonadotrophic hormones
$(d)$ Progestational hormone
$(e)$ Blood pressure lowering hormone
$(f)$ Androgens and estrogens.

Identify the steroid hormone.