4.5 Co-ordination and homeostasis 0.0 / 5 ? Biology4.5 Co-ordination and homeostasisIGCSEEdexcel Created by: 14mut64Created on: 12-05-19 11:42 Homeostasis Homeostasis is the maintenance of constant internal environment. Control of body water content and body temperature are both examples of this. Water is taken into the body and lost through: the skin, as sweat lungs, in breath the kidneys, in urine 1 of 3 Hormones 1 Adrenaline produced in the adrenal glands increases heart rate increases blood flow to muscles decreases blood flow to digestive system Insulin produced in the pancreas reduces glucose levels in blood causing liver to convert glucose to glycogen 2 of 3 Hormones 2 Testosterone produced in the testes promotes gamete fermentation controls secondary sexual characteristics Progesterone produced in the ovaries (corpus luteum) maintains uterus lining Oestrogen produced in the ovaries promotes gamete fermentation controls secondary sexual characteristics trigers the formation of the lining of the uterus 3 of 3
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