Delete Content. A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment. Each transport protein is specific to a certian molecule (indicated by matching colors).
The pancreas contains cells which release both insulin and glucagon. The endocrine system consists of a number of different glands which secrete hormones that dictate how cells and organs behave.
As an endocrine organ, the pancreas produces two sugar-regulating hormones: insulin and glucagon. After reviewing the functions of insulin and glucagon and the four cell types that comprise the endocrine pancreas, we'll examine in detail the main disease associated with the pancreas, diabetes mellitus.