: the bodily system that in vertebrates is made up of the brain and spinal cord, nerves, ganglia, and parts of the receptor organs and that receives and interprets stimuli and transmits impulses to the effector organs â compare central nervous system â autonomic nervous system, peripheral nervous system.
Insulin is produced by beta cells of the pancreatic islets in most vertebrates and by the Brockmann body in some teleost fish. Cone snails Conus geographus and Conus tulipa, venomous sea snails that hunt small fish, use modified forms of insulin in their venom cocktails.
Insulin is a hormone, which is a type of chemical. In the body, insulin is produced in the pancreas. It is needed to allow sugars, or glucose, from food to enter cells.There, glucose is broken down (metabolized) to produce the energy needed for the cells to work properly.n the body, insulin is produced in the pancreas. It is needed to allow sugars, or glucose, from food to enter cells. There, glucose is broken down (metabolized) to produce the energy needed for the cells to work properly.