Question

When molecules of the hexose sugar ___ leave the intestine and are carried to the liver, some of them enter the systemic vasculature where they bind to the Glut2 transporter on ____ cells in the _____ to cause the release of the hormone ____ . This hormone binds to receptors on skeletal and cardiac muscle to permit ___ to enter these cells through Glut4 transporters. When blood levels of these hexose sugars drop, ____ cells in the endocrine pancreas release ____ which signals_____ in the liver to convert to ____ .

Answer 1

When molecules of the hexose sugar glucose leave the intestine and are carried to the liver, some of them enter the systemic vasculature where they bind to the Glut2 transporter on beta cells in the pancreas to cause the release of the hormone insulin . This hormone binds to receptors on skeletal and cardiac muscle to permit glucose to enter these cells through Glut4 transporters. When blood levels of these hexose sugars drop, alpha cells in the endocrine pancreas release glucagon which signals glycogen in the liver to convert to glucose .