Biology·Organisation & maintenance · NSSCO 3.13.3
Hormones in humans
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Your body's slower, chemical messaging system — what a hormone is, the main glands and what they make, the 'fight or flight' rush of adrenaline, and how hormones compare with nerves.
What you'll learn in this lesson
By the end you should be able to (NSSCO Biology 3.13.3):
- Define a hormone as a chemical made by a gland, carried in the blood, that alters a target organ
- Identify endocrine glands and their secretions (pancreas/insulin, adrenal/adrenaline, testes/testosterone, ovaries/oestrogen)
- Describe the role of adrenaline (raising blood glucose and pulse rate)
- Compare nervous and hormonal control in terms of speed and longevity
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Miss Rachel and Mike talk through the whole topic — with the figure and working drawn live.