How Hormones Work In The Body?

Hormones are a chemical compounds that are made by the glands and organs of your endocrine system. These glands release hormones into the blood, where they travel until they wash over the cells to which they were sent. In this way, hormones act as messengers on behalf of the brain and nervous system.Certain parts of the body release hormones in response to certain stimuli. For example, the hypothalamus secretes hormones (such as gonadotropin releasing hormone—GnRH) that stimulate the release of many other hormones (such as follicle stimulating hormone—FSH). When the end hormone levels (such as FSH) are high, the hypothalamus is turned off from producing more stimulating hormones (such as GnRH).Other organs, such as the parathyroid gland, secrete hormones in response to local conditions, such as calcium levels in the blood.

Hormones are a chemical messengers thats travels through tissue to organ.

The endocrine systems consists of hormones and glands. It controls all the hormones and the major function of the of the endocrine system is promoting the structural changes of the body.
For example, the permanent changes occurring in the body over the period of time like height, development of sexual organs, etc. is a part of the structural changes.
The endocrine system is to maintain a stable environment within the body or homeostasis.
For example, maintaining the blood sugar levels according to changes occurring in the body is homeostasis.