Vitamin-$D$ is produced in the human body in

Identify the location of secretion and the primary function for the following hormones:
$(1)$ Relaxin
$(2)$ Thyrocalcitonin

The term 'hormone' was coined by

Which one of the following is not a gland?

List the hormones secreted by the following:
$(a)$ Hypothalamus $(b)$ Pituitary $(c)$ Thyroid $(d)$ Parathyroid $(e)$ Adrenal $(f)$ Pancreas $(g)$ Testis $(h)$ Ovary $(i)$ Thymus $(j)$ Atrium $(k)$ Kidney

The secretions of endocrine glands are released directly