What is the term used for secretions of endocrine glands responsible for changes taking place in the body?

What is endocrine gland?

Calcium plays a very important role in the formation of bones. Write on the role of endocrine glands and hormones responsible for maintaining Calcium homeostasis.

List the major endocrine glands and state their postion in the human body.

Name the term used for the sum of kinetic and potential energy of a body.