Humans have hormones in the bloodstream doing all sorts of things. We have all heard of adrenaline, testosterone, human growth hormones and so on, but there are dozens of others helping to control, regulate and stimulate different functions in the human body.

How do your hormones work? – Emma Bryce
Why Do We Need Hormones?
Great Glands – Your Endocrine System: CrashCourse Biology #33
Endocrine System, Part 1 – Glands & Hormones: Crash Course A&P #23
(Part 2)
The Endocrine System
Endocrine gland hormone review | Endocrine system physiology | NCLEX-RN | Khan Academy
Puberty and Hormones | What to Expect As a Parent
Hormonal Control of the Menstrual Cycle, Animation.
How Hormones Changed My Body (w/ pictures)
Testosterone — new discoveries about the male hormone | DW Documentary

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