glycogen
decrease of blood glucose levels
The hormone that regulates blood glucose levels is insulin plus a second hormone, glucagon. Insulin lowers blood glucose levels and glucagon increases blood glucose levels. Insulin actually carries the glucose molecule across the cell membrane. That is how it actually lowers the glucose molecules in the blood. Glucagon causes the liver, which stores glycogen, to convert it to glucose which is released in the blood. These two hormones form a feedback mechanism which keeps glucose stable.
Carbohydrates are for "quick energy". If you have low glucose levels, your liver is going to detect this and your body will start to use up the glycogen reserves. Lipids contain more than twice the energy per gram than carbs, but they are referred to as "long term storage" and cannot be utilized right away.
HYPERGLYCEMIA;is the condition in which increased levels of blood glucose are found.this generally occurs during diabetic condition caused due to deficiency of insulin bec of various reasons.generally in presence of insulin it causes decrease in blood levels of glucose.due to its absence, cells get glucose deficiency although they are surrounded by glucose bec insulin acts as a key to cell for its uptake.as a result increase in blood glucose levels occurs.in order to prevent hyperglycemia insulin supplements are to be taken.this condition also occurs due to excess secretion of glycogen.this increase glucose levels of blood.
There are two hormones that regulate blood glucose levels. One is insulin. This horemone "carries" glucose into the cell. No glucose and the cell starves and the glucose levels get higher in the blood. The second hormone takes glucose out of liver storage and increases the glucose in the blood. These two are a feedback mechanism that keeps the levels in a normal range.
When blood glucose levels drop, it is vital for the body to help stabilize them prevent fainting. The body will take fat reserves and convert them to glucose to do this.
decrease of blood glucose levels
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A decrease in blood sugar levels would trigger the secretion of glucagon. The glucagon would raise the blood sugar levels through release of glucose from the glycogen stored in the liver.
During exercise the body depletes its glucose reserves and blood sugar levels fall.
One function of cortisol is to decrease the cellular use of glucose while increasing both the available glucose (by promoting the brakedown of glycogen) and the conversion of amino acids to carbohydrates. Therefore, the net result of elevated cortisol levels would be an elevation of blood glucose.
Liver
The hormone that regulates blood glucose levels is insulin plus a second hormone, glucagon. Insulin lowers blood glucose levels and glucagon increases blood glucose levels. Insulin actually carries the glucose molecule across the cell membrane. That is how it actually lowers the glucose molecules in the blood. Glucagon causes the liver, which stores glycogen, to convert it to glucose which is released in the blood. These two hormones form a feedback mechanism which keeps glucose stable.
After a meal, glucose levels rise. This causes the pancreas to excrete insulin. Insulin causes cells in the liver, fat, and muscle tissue to take up glucose and store it as glycogen. This makes the blood glucose levels decrease again to a normal rate.
The pancreas releases insulin to lower the level of glucose in blood, and on the other hand, for the balance, it also secretes glucagon to elevate the level of glucose. Insulin is one half of the balance mechanism for glucose levels. Too much and too little glucose has damaging effects on the body and it's cells.
Glucagon is the hormone that raises blood glucose levels.
It is lowered by insulin, which is produced in the beta cells of the pancreas in an area called the Islet of Langerhans. Blood glucose is also suppressed by somatostatin which is produced in the delta cells of the pancreas.