Hormones are the body’s messenger. They are produced by endocrine glands, which are located throughout the body. Endocrine glands include the

Pituitary, Pineal, Adrenal, Hypothalamus, Thymus, Thyroid, Parathyroid, Pancreas, female Ovaries and male Testes.

Hormones have specific functions and target cells. The glands release the hormones and they travel in the blood and go to their target cells. Once they bind and lock with their target cells, that cell’s activity is either turned on, turned off, sped up or slowed down. For example, estrogen is the sex hormone that’s responsible for secondary sex characteristics like, breast development, hair on the genitalia and underarm and egg release during ovulation. Another example is Adrenalin, the hormone made by the Adrenal gland. Adrenalin causes the “flight or fright” response in our bodies, causing our heart rate to accelerate and muscles to tighten during times of say, fear.

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