Insulin and blood sugar control Controlling the blood sugar levels When you digest a meal, particularly one which is high in carbohydrate foods such as bread, pasta and cakes, the level of glucose in your blood rises. Glucose is important to the cells of the body, particularly the brain and the muscles, as an energy source for cellular respiration. If you don't eat for a long time or take a lot of exercise the blood sugar levels could fall dangerously low. 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.
You won't believe these 10 facts about people Homeostasis can be defined as an organism's tendency to maintain the equilibrium of different internal systems by using various biochemical and physical processes.
Examples of homeostasis in humans include the body's attempt to maintain a fairly constant and normal blood pressure, and its efforts to regulate internal body temperature. Another example of human homeostasis is glucose homeostasis, also known as blood glucose regulation or blood sugar regulation.
Glucose homeostasis relies on the balance and interactions of two hormones — insulin and glucagon — to maintain a healthy blood glucose level. Under normal circumstances, the body is able to balance the amount of glucose, or sugar, in the Glucose homeostasis with the amount of glucose that the cells need for fuel.
The hormone insulin, which the pancreas produces, facilitates the transport of glucose into the cells. Too little available insulin in the bloodstream will reduce the amount of glucose that the cells are able to absorb. This will raise the blood glucose level, which in turn stimulates the pancreas to release more insulin and allow more glucose absorption.
The other side of the equation in glucose homeostasis involves glucagon — another hormone produced by the pancreas. Glucagon works in a similar but opposite manner as insulin.
When blood glucose levels are low, the pancreas releases glucagon. The hormone stimulates the liver to release glucose stored within its cells, thus raising blood glucose levels to a normal level. Ad In a healthy individual, these hormonal interactions and adjustments maintain a fairly constant and optimal blood glucose level.
When something interrupts this glucose homeostasis, a person may experience blood glucose levels outside the normal range for a healthy person.
Hyperglycemiaor high blood glucose, can occur when the pancreas produces insufficient insulin or when cells are resistant to insulin. Insufficient insulin and insulin resistance are associated with diabetes mellitus and can cause severe hyperglycemia.
Patients with diabetes mellitus should closely monitor their blood glucose levels. Often, individuals with diabetes will need to take insulin injections or oral medications to control their high blood glucose.
Left untreated, diabetes mellitus and the associated hyperglycemia can damage the kidneys, eyes, and circulatory system. Hypoglycemiaor low blood glucose, is typically considered less serious than hyperglycemia unless the hypoglycemia is present in a patient with diabetes.
In such cases, the hypoglycemia can mean an overdose of administered insulin or oral medication, which can lead to dangerously low blood glucose levels.
Less serious cases can occur because of fasting, overexertion, or some metabolic condition. Symptoms of hypoglycemia include fatigue, nausea, and dizziness.Glucose homeostasis relies on the balance and interaction between glucose and insulin.
The pancreas produces insulin which allows the transport of glucose into the cell. When not enough insulin is available in the body, the amount of glucose the cells are able to absorb will be reduced. 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 how diabetics can manage their disease.
The gastrointestinal tract plays a major role in the regulation of postprandial glucose profiles. Gastric emptying is a highly regulated process, which normally ensures a limited and fairly constant delivery of nutrients and glucose to the proximal gut.
The subsequent digestion and absorption of nutrients are associated with the release of a set of hormones that feeds back to regulate. Blood sugar regulation is the process by which the levels of blood sugar, primarily glucose, are maintained by the body within a narrow range.
This tight regulation is referred to as glucose homeostasis. The glycolysis page describes the process and regulation of glucose breakdown for energy production as well as the disruption in theses processes due to alcohol consumption.
Homeostasis [back to top] Homeostasis literally means “same state” and it refers to the process of keeping the internal body environment in a steady state. The importance of this cannot be over-stressed, and a great deal of the hormone system and autonomic nervous system is dedicated to homeostasis.