The term "neuroendocrine" refers to a system that involves both the nervous and endocrine systems. The endocrine system is responsible for producing hormones, which are chemical messengers that regulate various functions in the body such as growth, metabolism, and reproduction. The nervous system, on the other hand, controls bodily functions through electrical signals transmitted by neurons.
In a neuroendocrine system, there is an interaction between these two systems where nerve cells release hormones that affect the function of other nerves or organs in the body. This type of communication can occur rapidly and allows for quick responses to changes in the environment. An example of this would be the "fight or flight" response, which involves both the nervous system (through the activation of the sympathetic nervous system) and the endocrine system (through the release of hormones such as adrenaline).
Overall, a neuroendocrine system is one in which nerve cells can influence hormone production or function, allowing for complex communication between different parts of the body.