Simple IB Biology

#6.6 Human Physiology - Hormones, Homeostasis, and Reproduction

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In the last sub-unit of unit 6 we are going to explore the content of:

  • Insulin and glucagon are secreted by β and α cells of the pancreas respectively to control blood glucose concentration
  • Thyroxin is secreted by the thyroid gland to regulate the metabolic rate and help control body temperature
  • Leptin is secreted by cells in adipose tissue and act on the hypothalamus of the brain to inhibit appetite
  • Melatonin is secreted by the pineal gland to control circadian rhythms
  • A gene on the Y chromosome causes embryonic gonads to develop as testes and secrete testosterone
    • ...more
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    Simple IB BiologyBy Amirali Ghajari