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.
Addisonâs Disease: Symptoms, Causes, Diagnosis & Treatment. The adrenal glands are a part of the bodyâs endocrine system, an interconnected group of glands that work together to secrete hormones (chemical substances) that play an important role in all aspects of our bodyâs processes.ddisonâs Disease: Symptoms, Causes, Diagnosis & Treatment. The adrenal glands are a part of the bodyâs endocrine system, an interconnected group of glands that work together to secrete hormones (chemical substances) that play an important role in all aspects of our bodyâs processes.