IMMUNOLOGY

Detailed explanation-1: -The immune system would provide flexibility to the host when dealing with the environment and with itself, consequently adding flexibility to the management of homeostasis. For example, the immune system participates in glucose metabolism, even though glucose metabolism is ancient and evolutionary conserved.

Detailed explanation-2: -The acquired immune system, with help from the innate system, makes special proteins (called antibodies) to protect your body from a specific invader. These antibodies are developed by cells called B lymphocytes after the body has been exposed to the invader. The antibodies stay in your child’s body.