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.
Glands included in the endocrine system include the hypothalamus, pituitary gland, thyroid, parathyroid, adrenal glands, pineal body and reproductive glands which include the ovaries and the testes. Each one of these systems has a function to help the body stay in balance.ype 1 diabetes is an autoimmune disorder where some other part of the body's immune system attacks pancreatic cells, preventing them from producing insulin. Any one of these delicate systems can be the culprit in pushing the body's system out of balance.