|The hormones that are produced and released by neuroendocrine cells into the blood stream are known as neurohormones. The neuroendocrine cells are also known as neurosecretory cells. By definition of being hormones, these are secreted into the blood for general effects, but these Neurohormones can also have other functions as neurotransmitter or as self-messenger i.e, autocrine messenger or local messengers i.e, paracrine messenger. In specialized hypothalamic neurons the hypothalamus produces neurohypophysial hormones as well as releasing hormones which extend to the median eminence and neurohypophysis. The adreno-medullary hormones are produced in chromaffin cells, cells that are similar in structure to post-synaptic sympathetic neurons, by adrenal medulla. Even if they are not neurons they are derivatives of the neural crest.
Review article comes in the form of systematic reviews and literature reviews and are a form of secondary literature. Systematic reviews determine an objective list of criteria, and find all previously published original research papers that meet the criteria. They then compare the results presented in these papers. Literature reviews, by contrast, provide a summary of what the authors believe are the best and most relevant prior publications.