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Your pancreas. It makes and adds insulin to your blood stream to counteract high sugar.
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How does the feedback control system for insulin production work?
The control of blood glucose levels operates by what is known as a negative feedback mechanism. Here is a summary of the 2 control loops.When the blood glucose level goes upBlood sugar (glucose) rises;The pancreas detects the rise;The pancreas pumps out insulin into the blood;Insulin helps the uptake of glucose into muscles and other cells;This causes the blood glucose level to fall to its normal set point; andThe pancreas detects the fall and switches off insulin production.When the blood glucose level goes downBlood sugar (glucose) drops;The pancreas detects the drop in blood sugar;The pancreas switches on the output of glucagon into the blood;Glucagon signals the liver to break down glycogen into glucose;The liver releases glucose into the bloodstream;Blood glucose goes up to its normal set point; andThe pancreas detects the rise in blood sugar and switches off glucagon release.
Why does your body need glycogen?
The body's blood glucose level needs to remain in homeostasis (about 90mg/100mL). if the blood glucose level rises, the beta cells of the pancreas will secrete insulin into the blood. the body cells will take up more glucose and the liver also takes up glucose and stores it as glycogen. these mechanisms cause the blood glucose level to drop back to set point and the stimulus for insulin release stops. Alternativey if the blood glucose level drops the alpha cells of th pancreas will release the hormone glucagon into the blood. this causes the liver to break down glycogen and therefor release glucose into the blood.blood glucose level will then rise back to set point and the stimulus for glucagon release stops. Therefore glyogen forms as an energy reserve that can be quickly mobilized to meet a sudden need for glucose. So when glucose is needed by the body, glycogen will be broken down and converted back to glucose to be used by the body. Therefore glycogen forms an important part of the process for the maintenance of glucose homeostasis in the body.
Describe the two control mechanisms which enable the body to maintain optimum health?
Homeostasis is brought about by negative feedback control. When a change from the norm/set point is detected a counteractive set of measures occur to return the body's internal environment to the set point; eg.1. Osmoregulation . The norm/ set point is the normal blood water level. If the blood water level increases eg after drinking, this is detected by osmoreceptors in the hypothalamus. The hypothalamus responds by sending impulses to the pituitary gland to reduce Antidiuretic hormone (ADH) release. Reduced levels of ADH cause the kidney tubules to reabsorb less water leading to excretion of large volumes of dilute urine and returning the blood water levels to the set point. If the blood water level decreases eg after exercise or eating salty foods, this is detected by osmoreceptors in the hypothalamus. The hypothalamus responds by sending impulses to the pituitary gland to increase ADH release. Increased levels of ADH cause the kidney tubules to reabsorb more water leading to excretion of small volumes of concentrated urine and returning the blood water levels to the set point. eg 2. Blood glucose level. Receptors in the pancreas detect a rise / fall in glucose level in the bloodstream. If blood glucose is too low eg after exercise or a prolonged fast, the pancreas releases the hormone glucose which promotes the conversion of glycogen in the liver to glucose to raise the blood glucose level to the set point. If blood glucose level is too high eg after a meal, the pancreas releases a different hormone, insulin, to promote the conversion of excess glucose to glycogen to be stored in the liver. this has the effect of lowering blood glucose level to the set point.
Is glucose a blood sugar?
Correct, glucose is a blood sugar.
Is a reading of 137 of concern for blood glucose?
A fasting blood glucose of 137 is a concern. A random blood glucose of 137 is not a concern.
What is a glucose blood test for?
To test for the amount of sugars (glucose) in the blood.
What hormone reduces blood glucose levels and what hormone raises blood glucose levels?
Glucagon is the hormone that raises blood glucose levels.
What is blood sugar?
Blood sugar is a measure of the glucose or amount of glucose present in a person's blood.
When blood glucose level rises the pancreas secretes insulin and as a result blood glucose level declines when blood glucose level is low the pancreas secretes glycogen and as a result blood glucose?
Catalytic feedback
When blood glucose level rises the pancreas secretes insulin and as a result blood glucose level declines When blood glucose level is low the pancreas secretes glucagon and as a result blood gluc?
Insulin decrease glucose level.Glucogon increase glucose level.
Why does blood carry glucose?
glucose gives us energy, the blood carries the glucose to our muscles so they can move
What is a ancillary blood glucose test?
bedside blood glucose test
