PubMed Health⌕ Search

Biomedical subjects

P Ruiz Pesini

Publications and source records attributed to P Ruiz Pesini.

9 recordsLinked to original sources
PubMed1991

The nucleus of the tractus solitarius of the dog. A morphological and morphometric analysis.

The neuronal and fibrous architecture of the nucleus of the tractus solitarius (NTS) of the dog has been studied in transversely cut Nissl, myelin and reduced silver stained serial sections. Eight distinct subdivisions, clearly delimited both by their cytoarchitectonic and fibrous characteristics, have been identified. They are: the commissural, gelatinous, lateral, interstitial, dorsolateral, ventrolateral, intermediate and medial subdivisions. Their rostrocaudal extensions and locations in relation to the obex are summarised in Table 1. A morphometric analysis was additionally done. The frequency distributions of cell areas and cell form factor of each subdivision are represented by histograms in Figures 8 and 9 respectively.

Animals↗
PubMed1989

The thalamus of the dog: a tridimensional and cytoarchitectonic study.

The organization of the thalamus varies considerably from species to species. This article reports a tridimensional study of the canine thalamus in which 18 nuclei were distinguished on the basis of their delimitation in sections and their differing cytoarchitectonic characteristics, the latter having been objectively quantified by means of an image analyser. On the basis of their location and/or mutual similarities, these 18 nuclei are classified in 5 groups. The thalamus of the dog is similar to that the cat, but differs considerably from those of other well-studied species.

Animals↗
PubMed1988

Topography and microscopical configuration of the corpus striatum of the dog.

The basal ganglia are very similarly disposed in superior animal, but their way of grouping is different in human species and domestic mammals. We have studied them in the dog, except for the Nucleus accumbens, from macroscopic and microscopic points of view, with the help of 25 and 50 pm thick transverse serial sections, stained by Nissl's technique. Each of these nuclei presents its own characteristics, as well topographically and extended as of shape, size and neuron density.

Animals↗
PubMedDate not supplied

Macroscopical and microscopical anatomy of the hippocampus in the dog.

In this article we have studied the topography, relationship and projection of the hippocampus in the dog by means of 1 mm thick transverse, horizontal and parasagital sections stained with Mulligan's reagent and 50 microns transverse sections (Nissl). The macroscopical disposition of this part of the CNS was completed by means of a gross dissection. Horizontal sections of 10 microns through the middle or limbic part were used to determine the general microscopic anatomy and to define the morphometry of its cells. From this point of view the Hippocampus of the dog appears to be intermediate between the rat and primates, species better studied.

Animals↗