The parvocellular neurosecretory cell, also known as the parvicellular neuroendocrine cell, is a type of neuron that synthesizes and secretes small amounts of hormones into the bloodstream. It is found in the hypothalamus of the brain and plays a crucial role in regulating various physiological processes, such as metabolism, growth, and reproductive function. Some synonyms for this cell type include parvocellular neuroendocrine neuron, parvocellular neurosecretory neuron, and parvocellular neuroendocrine system. Additionally, this type of neuron is sometimes referred to as a releasing hormone neuron, due to its function in releasing hormones into the bloodstream in response to certain stimuli.