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