Results 191 to 200 of about 11,715 (225)
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On the neurosecretory system of Cerebratulus marginatus (heteronemertini)
General and Comparative Endocrinology, 1969Abstract In the brain and lateral nerve cords of Cerebratulus neurosecretory cells may be classified in four main categories. The a , b , and c cells stain with chrome haematoxylin and paraldehyde fuchsin. The a and b cells are rich in neurosecretory material.
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Fine Structure of the Neurosecretory System in Lepidoptera [PDF]
Nature, 1960 THE following is a short account of an electron microscope study of neurosecretory cells found in three lepidopterous insects, Bombyx mori, Philosamia cynthia ricini and Papilio xuthus. I believe I may have succeeded in observing early stages in the formation of secretory granules in the perikarya of neurosecretory cells of the intercerebralis.
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Degeneration and Regeneration of Neurosecretory Systems
1973Publisher Summary Degenerative and regenerative phenomena have substantially contributed to the knowledge of neurosecretory systems. The general structural organization, the degeneration, and regeneration of neurosecretory neurons, and the process of neurosecretion are identical throughout the animal kingdom.
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The histochemistry of the neurosecretory system in Hirudo medicinalis
General and Comparative Endocrinology, 1966The histochemistry of the neurosecretions of the brain of Hirudo is examined. The secretions of all of the cell types studied ( α 1 , α 2 β 1 β 2 ) are found to be proteinaceous, with possible small carbohydrate and lipid moieties. The PF-positive secretions of both α cell subtypes are characterized by a high content of cystine and a low ...
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The Parvicellular Neurosecretory System
1964Publisher Summary This chapter discusses a peculiar neuron system in the ventral part of the hypothalamus, by the aid of the rapid golgi-technique in dog and cat. The small cell bodies are situated in the arcuate (infundibular) and in the ventral part of the anterior periventricular nuclei, as well as in the medial part of the retrochiasmatic region.
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Ultrastructure of the Caudal Neurosecretory System in Acipenseridae
1978The fine structure of the cells of the caudal neurosecretory system in Acipenseridae exhibits all characteristic neurosecretory features. They have large, polymorphic nuclei rich in chromatin, with numerous nucleoli. The nuclear envelope has many pores. Numerous intranuclear cytoplasmic invaginations are observed; these are characteristic of the nuclei
N. A. Efimova, I. I. Saenko
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The Neurosecretory System Is Hypertrophied in Senescence-Accelerated Mice
Rejuvenation Research, 2006The hypothalamic supraoptic and paraventricular nuclei form the neurosecretory system and synthesize the neurohormones oxytocin and arginine-vasopressin. The senescence-accelerated mouse is a model of rapid aging that displays senile amyloidosis and memory problems. This paper presents the characterization of the neurosecretory system and describes the
Damaso Crespo +4 more
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Evolution of the Neurosecretory System in Crustacea
1978At present, many data have accumulated that show the important role of the neurosecretory system (NSS) in control of different processes of metabolism, reproduction, sexual differentiation, ontogenetic development, and adaptive change of coloration in Crustacea with different levels of organization.
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The pharmacology of recurrent inhibition in the supraoptic neurosecretory system
Brain Research, 1971Abstract A pharmacological study of recurrent inhibition in the supraoptic neurosecretory system of the cat has been conducted in an attempt to identify the inhibitory transmitter in this pathway. Acetylcholine (muscarinic component), glycine and GABA were considered as possible transmitters mediating this inhibitory pathway.
Roger A. Nicoll, Jeffery L. Barker
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A neurosecretory system terminating in the Helix heart
Comparative Biochemistry and Physiology, 19691. 1. A dense network of nerve fibres is described in the auriculoventricular junction of the Helix pomatia heart. 2. 2. The results of both light and electron microscopical analyses suggest to us that the system has a neurosecretory function. 3. 3. The significance of such a system is discussed.
N.N. Osborne, G.A. Cottrell
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