neurobiotaxis n. [Gr. neuron, nerve; bios, life; taxis, arrangement] 1. The hypothetical migration of nerve cells and ganglia toward regions of maximum stimulation during phylogeny. 2. In embryology, tendency of nerve cells to migrate toward the source of their stimuli.
neuroblast n. [Gr. neuron, nerve; blastos, bud] (ARTHRO: In-secta) In embryology, the inner layer of ectodermal cells that forms the nervous tissue. see dermatoblasts.
neurocirrus n.; pl. -ri [Gr. neuron, nerve; L. cirrus, curl] (ANN: Polychaeta) Cirrus normally on the lower edge of the neuropodium.
neurocyte n. [Gr. neuron, nerve; kytos, container] The cell body of a neuron; the nerve cell; cyton.
neurofibrils n.pl. [Gr. neuron, nerve; L. dim. fibre, thread] Fine fibers running longitudinally in axons and dendrites and through the body of the neuron.
neurogenic a. [Gr. neuron, nerve; gennaein, to produce] 1. Forming nervous tissue. 2. Stimulating nervous energy for certain muscular or glandular reactions. see myogenic.
neuroglia n.pl. [Gr. neuron, nerve; glia, glue] Nonnerve cells in the brain or ganglia; glia; glial cells; gliacytes.
neurohemal organs (ARTHRO: Insecta) Organs involved with the release of products of neurosecretory cells into the hemolymph; corpora cardiaca best developed though less conspicuous ones make up the perisympathetic system associated with the ventral nerve cord.
neurohormone n. [Gr. neuron, nerve; hormaein, to excite] A hormone produced by neurosecretory cells.
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