The Preoptic Area of the Domestic Fowl. II. Ultrastructure of the Medial Preoptic Area

Overview

Journal Cell Tissue Res

Specialties Anatomy & Histology
Cell Biology

Date 1980 Jan 1

PMID 7407864

Citations 4

Authors

G C Panzica

Affiliations

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Abstract

Numerous secretory parvocellular perikarya were found in the preoptic region of the domestic fowl (Gallus gallus). The dense-core secretory vesicles belong to two categories: vesicles with a diameter of (i)80-90 nm and (ii) 110-140 nm. Scattered magnocellular elements display larger dense-core granules. The parvocellular neurons form unit-like clusters, showing also zones of direct apposition of neuronal membranes. The surrounding neuropil is rich in synaptic structures, formed by at least three types of axon terminals, distinguishable on the basis of vesicular morphology. These observations confirm the findings in other avian species. The hypothetical function of this system of peptidergic neurons in the rostral hypothalamus of birds is discussed.

Citing Articles

Ultrastructural characterization of the sexually dimorphic medial preoptic nucleus of male Japanese quail.

Panzica G, Spigolon S, Castagna C Cell Tissue Res. 1995; 279(3):517-27.

PMID: 7736550 DOI: 10.1007/BF00318164.

The hypothalamic magnocellular system in the domestic fowl. A golgi and electron microscopic study.

Viglietti-Panzica C, Panzica G Cell Tissue Res. 1981; 215(1):113-31.

PMID: 7226190 DOI: 10.1007/BF00236253.

Synaptology of neurosecretory cells in the nucleus paraventricularis of the domestic fowl.

Panzica G, Viglietti-Panzica C, Contenti E Cell Tissue Res. 1982; 227(1):79-92.

PMID: 7172215 DOI: 10.1007/BF00206333.

Vasotocin-immunoreactive elements and neuronal typology in the suprachiasmatic nucleus of the chicken and Japanese quail.

Panzica G Cell Tissue Res. 1985; 242(2):371-6.

PMID: 3902247 DOI: 10.1007/BF00214550.

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