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Powerpoint Description:

This slideshow covers: the nervous system, nervous reactions, conscious and reflex actions, the eye and how it works, how we see things, problems with vision, using lenses to correct vision, the iris reflex, the brain, studying the brain, hormones and the endocrine system, adrenaline and thyroxine, hormones in the menstrual cycle, fertility, methods of contraception and their evaluation, plant hormones, auxins, ethene and gibberellins, homeostasis, controlling body temperature, controlling blood sugar levels with glucogen and glycogen, negative feedback, diabetes, osmosis and how it can damage cells, kidneys, the structure of a kidney, controlling water content using ADH, excreting products.

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