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Hire Writer Blood glucose levels are reduced by the liver and muscle cells being stimulated to take up more glucose and convert it to glycogen which is insoluble; the production of glucose from protein and fats gluconeogenesis is reduced; cell membranes increase in their permeability to glucose, therefore more glucose is taken out of the blood and into the cells increasing respiration.
The level of blood glucose is constantly monitored by the beta cells. As the effects of insulin bring down the blood glucose level the cells secrete less and less of the hormone in accordance with the falling level of blood glucose — this continues until levels return to normal.
Homeostatic control of blood glucose levels essay writing. Homeostatic control of blood glucose levels essay writing. 5 stars based on reviews urbanagricultureinitiative.com Essay. College essays got me like memes. Putting poem quotes in an essay inter state water disputes essay help. It is important that the level of glucose in your blood (often called the blood sugar level) is controlled so that it does not rise too high or fall too low. This control is brought about by the pancreas, an organ which makes enzymes for the digestive system and hormones to control the blood glucose levels. Homeostasis and Feedback Loops. For example, negative feedback loops involving insulin and glucagon help to keep blood glucose levels within a narrow concentration range. If glucose levels get too high, the body releases insulin into the bloodstream. An important example of negative feedback is the control of blood sugar. After a meal.
The corresponding effect of this antagonistic mechanism occurs when blood glucose level have fallen too low — this is detected in the Islets of Langerhans by the alpha cells which are stimulated to produce glucagon. This hormone acts in two main ways to raise blood glucose concentration back to normal levels.
Firstly, it stimulates the process of glycogenolysis whereby the liver and muscle cells convert glycogen into glucose to be discharged into the blood. In addition, it increases gluconeogenesis so that more glucose is synthesised from protein and fat sources.
The two antagonistic processes described above combine to homeostatically regulate and maintain blood glucose at an appropriate level — their actions are summarised in the diagram below. Although insulin and glucagon are the hormones that have the greatest effect on blood glucose other hormones also play a part.
Somatotrophin, adrenaline and corticosteroids all work in conjunction with glucagon to counteract low blood glucose levels. In some people these essential control mechanisms are inactive and this results in a condition known as diabetes mellitus, of which there are around diagnosed cases in the UK.
The disease can be classed as either Type 1 insulin dependent or Type 2 non-insulin dependent diabetes, both of which have different characteristics and causes. The causes of this autoimmune response are not entirely clear, but it is believed to be a combination of genetic susceptibility and a virus which only has this effect on those who are genetically vulnerable.
In contrast Type 2 diabetes tends to develop more slowly and is most common in people over The main causes are defects in the beta cells so insulin production is decreased and insulin resistance, whereby insulin is no longer able to stimulate the absorption of glucose by cells.
This form of the disease is more strongly predicted by genetics than Type 1 and there is believed to be a link between Type 2 and obesity. For this reason one of the main steps against Type 2 is to lose weight in combination with improved diet and medication to stimulate insulin production in the pancreas — it is rare for insulin injections to be required.
Many symptoms are common to both types of disease. As the kidneys reach saturation point and become unable to reabsorb any more excess glucose it is excreted in the urine, known as glucosuria.
Due to osmosis the glucose takes a lot of water with it so the volume of urine is abnormally large and this results in the diabetic also being dehydrated and always thirsty. As cells are forced to metabolise fats and proteins for energy in the absence of glucose, ketones are produced which give the sufferer breath which smells of acetone.
Again, due to the metabolism of fats diabetes will also manifest itself as weight loss, especially in Type 1 cases. In the long term both types have potential to cause heart disease, kidney and nerve damage, stroke and blindness if not managed well.
As stated above both types are currently treated through a healthy diet combined with medication, but there are other treatment prospects to consider in the future such as Islet Cell Transplantation. Perhaps the most interesting is the work by the US Department of Energy on an artificial pancreas which if developed could free diabetics from the rigours of current treatments and ensure accurate control of blood glucose at all times.
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Homeostasis and glucose levels Glucose concentrations in the blood stream are primarily controlled by the action of two antagonistic pancreatic hormones, insulin and glucagon.
Glucose is first detected in the bloodstream by glucose transporter receptors expressed on the surface of specialized pancreatic cells known as alpha- and beta-cells. Video: Homeostasis of Glucose Levels: Hormonal Control and Diabetes In this lesson, we'll look at how the body uses hormones to maintain homeostasis of blood glucose levels, what happens in people who have diabetes, and .
Homeostatic Control of Blood Glucose Levels Glucose is an essential substance in the body as it is the primary source of energy for all biological functions and is.
Homeostatic control of blood glucose levels essay writing. Homeostatic control of blood glucose levels essay writing. 5 stars based on reviews urbanagricultureinitiative.com Essay. College essays got me like memes.
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Essay about Homeostatic Control of Blood Glucose Levels - Homeostatic Control of Blood Glucose Levels Glucose is an essential substance in the body as it is the primary source of energy for all biological functions and is indeed the only form of energy which can be used by .