Endocrine system

regulation and limits of bodies physiological variables (blood pH, sugar, CO2 concentration, temperature and H2O balance)

• thyroid gland - increases metabolic rate and regulates body temperature

hormone produced by FAT tissue in body targets hypothalmus of brain regules appetite

pineal gland regulates circardian rythm (more produced at night to make you tired!)

hormone produced in pancreas to regulate glucose in blood - beta cells produce insulin when there is high blood sugar

hormone produced in pancreas - alpha cells secrete glucagon when there is low blood sugar

when B cells don’t produce enough insulin

when body cell receptors don’t respond to insulin

a metabolic disease in which the body cant produce (enough) insulin which leads to elevated glucose level in blood

• glucagon released by A cells in pancreas • glucagon breaks down glucose from glycogen • blood sugar elevates • liver releases glucose into blood

• insulin released by B cells of pancreas • stimulates glucose to form glycogen by condensation reaction • blood sugar is lowered • fat cells take in glucose from blood