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Hormonal communication Typeit
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Many conditions are regulated using feedback systems, which correct changes by ensuring that conditions return to their optimum values. For example, a decrease in blood sugar concentration, also known as , is detected by cells in the of the pancreas, which secrete the hormone from glands. The cells of this hormone are liver cells, and the hormone attaches to receptors on their cell-surface membrane and activates enzymes which convert glycogen, glycerol and amino acids into . When blood sugar concentration rises above normal, the beta cells of the pancreas release the hormone in response to an accumulation of ions inside the cell. This causes an influx of calcium ions, leading to the insulin-filled vesicles fusing with the cell membrane.
Diabetics must be careful to control their intake of sugars and carbohydrates since this feedback system does not function correctly in their bodies. diabetes mellitus tends to develop in childhood and can be treated using hormone . More commonly, diabetes can develop slowly in middle-aged people as a result of obesity and poor , and can only be controlled effectively by making changes to a person's lifestyle.
The hormone adrenaline may also be released from the medulla of the in times of stress. It can trigger a range of effects, including vasoconstriction and an increase in rate.