Question

Which system regulates and controls growth, development, and metabolism?

Answer 1

That would be A the endocrine system.

It secrets hormones that control and regulate all sorts of function in our body.

Answer 2

Endocrine system regulates and controls growth, development, and metabolism.

Option A

Explanation :

The "endocrine system" consist of many glands which are collectively responsible for growth, development and metabolism. The hormones released from these glands controls the function of the other cells. Endocrine system forms both negative and positive feedback loops which inturn controls the release of hormones from the target cells back to the glands to stop the release of the reaction initiating hormone.

Endocrine glands are influenced with the physical factors in which the body is exposed and dealing with and releases hormone accordingly. For example due to darkness of night pineal gland releases melatonin to induce sleepiness in animals.