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What is insulin primarily regulated by?
Insulin secretion is primarily regulated by blood glucose levels. When blood glucose levels rise after a meal, beta cells in the pancreas release insulin to help cells uptake glucose for energy production.
What monosaccharide found in the blood has its concentration regulated by the hormones insulin and glucagon?
Glucose is called blood sugar.
Can muscle cells release glucose to the blood?
No, muscle cells do not release glucose into the blood. Instead, they take up glucose from the blood to use as fuel for energy production during muscle contraction. Glucose release into the blood is primarily regulated by the liver through a process called gluconeogenesis.
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.
Is there the same concentration of glucose when blood goes into the muscle and when it comes out?
Muscle requires glucose, and so there is not the same concentration of glucose in blood entering and exiting a muscle. The exiting blood will be lower in glucose.
How is glucokinase regulated?
Glucokinase is often referred to as the 'glucose sensor' as it directly relates the rate of β-cell glucose-dependent insulin secretion and the rate of hepatocyte glucose metabolism to the ambient blood glucose level. Read more in related link below.
Is blood the higher concentration of glucose?
Yes
What causes the concentration of blood glucose to return to normal?
The concentration of blood glucose returns to normal primarily through the actions of insulin and glucagon, hormones produced by the pancreas. After a meal, insulin is released, facilitating the uptake of glucose by cells for energy or storage as glycogen in the liver and muscles. Conversely, when blood glucose levels drop, glucagon stimulates the liver to release stored glucose back into the bloodstream. This delicate balance between insulin and glucagon helps maintain homeostasis in blood glucose levels.
Normally when the concentration of glucose in the blood falls below a certain level stored glucose reenters the blood until the original concentration of blood glucose is part of the process known as?
This process is known as glycogenolysis, where stored glycogen in the liver is broken down into glucose and released into the blood to maintain blood glucose levels.
Insulin causes a a decrease in the concentration of blood glucose b an increase in the concentration of blood glucose?
Insulin causes a decrease in the concentration of blood glucose by promoting the uptake of glucose into cells, especially muscle and adipose tissue. It also stimulates the storage of glucose as glycogen in the liver and muscle.
What is and example of homeostasis?
Regulating blood glucose concentration
What blood glucose concentration what pancreatic hormone is secreted to stimulate release of stored glucose?
glucagon
