0
negative feedback can increase the concentration of glucose in the blood stream. if the blood glucose levels are too low, alpha cells will produce glucagon which causes the liver to break glycogen down into glucose. it is then released into the blood stream which increase the blood glucose levels.
if it is too high, the beta cells will produce insulin which causes the liver and muscle cells to form glycogen from glucose. In addition, other cells are encouraged to use glucose in cell respiration rather than fats.
both the beta and alpha cells are produced from the pancreas.
What else can I help you with?
Are blood glucose levels regulated by positive feedback?
No, blood glucose concentration is regulated by negative feedback. When blood sugar levels are too high, the alpha particles in the pancreas' islets of Langerhans signal the pancreas to produce more insulin, which regulates the sugar level by stimulating the liver and other body cells to absorb more glucose at convert it into either glycogen or fat. This lowers the blood sugar concentration. If it were positive feedback, high blood sugar levels would encourage the production of more glucose to increase the blood sugar concentration.
Can you think of an example other than body heat where a negative feedback loop is utilized with the body?
Increased blood sugar will cause insulin production to rise and the cells will store the excess sugar, increased blood pressure causes a slower heart rate and decrease in oxygen levels will increase red blood cell production.
Does glycogenolysis increase blood glucose levels?
Yes, glycogenolysis is the breakdown of glycogen into glucose, which can increase blood glucose levels.
A decrease in blood glucose that causes the inhibition of insulin is an example of?
A decrease in blood glucose that causes the inhibition of insulin secretion is an example of a negative feedback mechanism. In this case, low blood glucose levels trigger the inhibition of insulin release to prevent further lowering of blood sugar and maintain homeostasis.
What is the sensor and integrator and effector of the blood glucose feedback loop?
The sensor in a negative feedback loop monitors the state of the variable, in this case blood glucose. For blood glucose, the sensor as well as the integrator is the Islets of Langerhans, since it contains the alpha and beta cells. Alpha cells produce glucagon, a hormone that acts on the liver to release more glucose into the blood. Beta cells produce insulin, which controls the uptake of glucose into the cells. The effectors respond to the sensor's messages, and act to maintain a variable. The effectors for blood glucose are the cells which take in glucose, as well as the liver.
Are blood glucose levels regulated by positive feedback?
No, blood glucose concentration is regulated by negative feedback. When blood sugar levels are too high, the alpha particles in the pancreas' islets of Langerhans signal the pancreas to produce more insulin, which regulates the sugar level by stimulating the liver and other body cells to absorb more glucose at convert it into either glycogen or fat. This lowers the blood sugar concentration. If it were positive feedback, high blood sugar levels would encourage the production of more glucose to increase the blood sugar concentration.
What term refers to the relatively constant level of blood glucose?
homeostasis/negative feedback system
Is control of blood glucose levels a negative feedback?
If high blood pressure is at play then a negative feedback system would reverse this. Through this negative feedback the stimulus of increased pressure is reversed or decreased by decreasing heart rate which decreases the blood pressure. If low blood pressure is at play the negative feedback system would also be appropriate because your body needs to reverse this stimulus. Your heart rate would increase to increase blood pressure. NOTE: Positive Feedback system enhances or further intensifies the stimulus so we would not want that for blood pressure. This is seen for birth contractions. You want to intensify contractions to enable the baby to get out of the canal. However, usually you need some external event to turn off the positive feedback or it could be fatal. In this case the baby is born so that stops the contractions.
Is insulin negative feedback or positive feedback?
Insulin is a hormone produced by the beta cells in the pancreatic islets of Langerhans that stimulates glycolysis and increase glucose uptake in muscle and adipose tissue; therefore, it maintain homeostasis in the body by decreasing blood sugar level when it is high. It shows a negative feedback because the response negates the stimulus to maintain homeostasis.
Is insulin on negative feedback?
Yes Insulin is a hormone produced by the beta cells in the pancreatic islets of Langerhans that stimulates glycolysis and increase glucose uptake in muscle and adipose tissue; therefore, it maintain homeostasis in the body by decreasing blood sugar level when it is high. It shows a negative feedback because the response negates the stimulus to maintain homeostasis.
Can you think of an example other than body heat where a negative feedback loop is utilized with the body?
Increased blood sugar will cause insulin production to rise and the cells will store the excess sugar, increased blood pressure causes a slower heart rate and decrease in oxygen levels will increase red blood cell production.
Is blood pressure negative or positive feedback?
Is the clotting of blood an example of positive or negative feedback?
How does the pancreas control the levels of sugar in your blood?
Negative feedback, opposing to positive feedback, stops a reaction, rather than promoting a reaction. Insulin, secreted from the pancreas, is a hormone that regulates blood sugar levels, and it tells your body to make more glucose for your blood. When you eat, the glucose comes in and adds more to what you already have. The glucose level of your body rises, telling the pancreas to stop secreting insulin and telling your body to stop making more glucose, producing a negative feedback.
What is the negative -feedback mechanism?
The body has several negative feed back mechanisms. In negative feedback loops our body will seek to reverse th direction of a stimulus. Meaning our body dislikes the stimulus, it will attempt to reverse it. Some examples: blood pressure, temerature control, blood glucose levels.
Does glycogenolysis increase blood glucose levels?
Yes, glycogenolysis is the breakdown of glycogen into glucose, which can increase blood glucose levels.
A decrease in blood glucose that causes the inhibition of insulin is an example of?
A decrease in blood glucose that causes the inhibition of insulin secretion is an example of a negative feedback mechanism. In this case, low blood glucose levels trigger the inhibition of insulin release to prevent further lowering of blood sugar and maintain homeostasis.
What is a negative feedback regulation of a hormone?
Put simply, negative feedback is the process by which a change is detected and then an action occurs to neutralise the change, i.e. negatively affect the change.For example, if blood glucose receptors measure a high amount of glucose in the blood, the the beta cells of the islets of langahans secrete insulin which increases glucose uptake and jump starts glycogenesis, ultimately decreasing the blood glucose levels.
