Descriptive of structures containing neurosecretory neurons, the axons of which form no synapses with other neurons and the axonal endings of which are modified to permit storage and release into the circulation of neurosecretory material.
[neuro- + G. haima, blood + suffix -in, material]
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
The eyestalks of crustaceans contain the optic lobes and the x-organ/sinus gland, a neuropeptide-secreting neurohemal structure that is analogous to the vertebrate hypothalamuspituitary system.
We conclude that this GABA does not originate in the nearby nerves, but probably is produced and released by a distant neurohemal organ.
These reproductive peptides may be released from much of the surface of the nervous system and not just from well-defined neurohemal organs.
In Lymnaea, the CDCs release egg-laying peptides into the hemolymph via neurohemal areas and also from blind ending axons in the medulla of the commissure (Van Minnen et al.
In addition to the CA, decapitation removes the median neurosecretory cells of the pars intercerebralis (PlC), the corpora cardiaca which serve as paired neurohemal organs for the products of the cerebral neurosecretory cells, intrinsic neurosecretory cells of the corpora cardiaca, and the nervus CA II which contain neurosecretory material.
Antagonistic, neurosecretory peptide hormones, the chromatophorotropins, produced and released by the eyestalk X-organ/ sinus gland complex and other neurohemal organs, regulate such pigment movements in decapod crustaceans (Rao, 1985).
T"" are neurohemal structures that release neurohormones "" cardioregulator and other functions into hemolymph ""ing to the heart (Alexandrowicz, 1953; Alexandrowicz and Carlisle, 1953).
Numerous IR-FaRP processes terminating in varicosities in the connective tissue around the CNS may constitute a diffuse neurohemal area and account for the hemolymph IR-FaRP levels.
At the electron microscopic level, membrane-bound electron-dense vesicles reminiscent of neurosecretory granules have been observed within axons in the median ocellar nerve of Semibalanus cariosus (Fahrenbach, 1965) and Chirona (Balanus) hameri (Clare and Walker, 1989); these vesicles apparently constitute a neurohemal area.
The neurosecretory system of the octopus vena cava: a neurohemal organ.