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(1)   The endocrine portion of the pancreas is composed of clusters of cells organized into structures referred to as the __________.



(2)   An increase in glucose concentration in the extracellular fluid of pancreatic insulin-secreting cells results in the generation of action potentials in these cells. The action potentials ultimately lead to insulin secretion. Which of the following channels are responsible for the initial depolarization of these endocrine cells to threshold?
(3)   An increase in glucose concentration in the extracellular fluid of pancreatic insulin-secreting cells results in the generation of action potentials in these cells. The action potentials ultimately lead to insulin secretion. Which of the following channels are responsible for the spike phase of the action potential in these endocrine cells?
(4)   An increase in glucose concentration in the extracellular fluid of pancreatic insulin-secreting cells results in the generation of action potentials in these cells. The action potentials ultimately lead to insulin secretion. Which of the following channels are responsible for membrane repolarization back to the resting potential in these endocrine cells?
(5)   The facilitative glucose transporter isoform that is regulated by insulin in its target tissues is:
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Posted: Sunday, March 8, 2015
Last updated: Tuesday, March 11, 2025
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