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.
The endocrine system and diabetes. Diabetes affects how the body regulates blood glucose levels. Insulin helps to reduce levels of blood glucose whereas glucagon's role is to increase blood glucose levels. In people without diabetes, insulin and glucagon work together to keep blood glucose levels balanced.he role of the endocrine system. The endocrine system is responsible for regulating many of the body's processes. The list below provides a selection of the roles of glands in the endocrine system: 1  Pancreas â regulates blood glucose levels.