Control of Blood Sugar Levels Whar homones sre imolved in the homecstasis of blo

Question

Control of Blood Sugar Levels Whar homones sre imolved in the homecstasis of bloud sogi he blood are Consistent. Small Hucuacios are hne, but if the lueose iuncentration in she high. a comas could result. If the gluense cnncentration in the Hood gs oo los, the person enoe seizures go into a conu or die In humans, hnrisone levols belp regular the pucst co uld expe the blood and keep us in homeostasis Model 1 - Hormonal Control of Glucose Meal Eaten Time 1. The relutive blood concentrations of which shree molecules are resconded in the graph of Modedl 2. Which molecule from Model 1 is found in the blood a the highesr coacentrations 3. Why do oells need glucose 4. According to the graph in Model 1, whac happens to blood glucose levels afer a meal has been eaten? l of Blood Sugar Levels

Explanation / Answer

In human beings energy is stored in the form of glycogen. Whenever energy is required glycogen is broken down into glucose and utilized by the cells. Two hormones play a role in the homeostasis of glucose in our body. One is insulin which is released when the blood sugar levels are high (helps in reducing the blood sugar levels) and the other is glucagon which is released when glucose levels are low in the blood (helps in increasing the blood sugar levels).

1. In model one relative concentration Glucose, Insulin and glucagon is recorded in the blood.

2. Glucose molecule is found at the highest concentration. As mentioned earlier, when glucose level increase, insulin is released, but small amount of insulin is sufficient to affect the target cells or organs, thus the levels of insulin are not as high as glucose.

3. Cells need glucose as a source of energy. Through glycolysis, citric acid cycle and oxidative phosphorylation glucose is oxidized to yield CO2 and H2O which yields energy in the form of ATP. It is the only source of fuel for brain and RBC.

4. After a carbohydrate rich meal the blood glucose levels increases. We can observe a spike in the blood glucose levels. Immediately our body releases insulin which increases the ability of all body cells to take up glucose thereby reducing the blood sugar levels. Insulin also increases the process of glycogeneis that is conversion of glucose to glycogen.

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