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.
Diabetes insipidus is a condition that results from insufficient production of the antidiuretic hormone (ADH), or vasopressin. ADH helps the kidneys and body conserve the correct amount of water. For this reason, it's also called water diabetes..Normally, ADH controls the kidneys' concentration of urine.It is secreted by the hypothalamus (a small gland located at the base of the brain), stored in the pituitary gland, and then released into the bloodstream.iabetes insipidus can be caused by several conditions, including the following: Malfunctioning hypothalamus (that produces too little ADH). Malfunctioning pituitary gland (that fails to release adequate ADH into the bloodstream). Damage to hypothalamus or pituitary gland during surgery or radiation therapy.