Sympathetic and sensory neurons projecting into the cervical sympathetic trunk in the chicken

Ohmori, Yasushige; Wakita, Tsuyoshi; Watanabe, Takatomo

doi:10.1016/0165-1838(92)90202-r

Cited by 5 publications

(2 citation statements)

References 20 publications

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“…Blood vessels were varied in their sizes and ganglionic nerve cells found in perivascular connective tissue of large blood vessels and characterized by oval or rounded pale nuclei with prominent nucleolus, this finding was in concords with the findings of (19) in duck , (17)in turkey, and (20) in chicken .…”

Section: Discussionsupporting

confidence: 72%

A gross anatomical and histological study of pancreas in adult Kestrel (Falco tinnunculus)

Al-Haaik¹

2019

IJVS

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Fifteen Kestrel were used in this study regardless to their sex. The results study showed that the pancreas of adult Kestrel (Falco tinnunculus) lies under the right side of the peritoneal cavity, and situated between the descending part and ascending part of the duodenum and has pale pinkish to white pinkish colored and consisted of 3 lobes dorsal (lobus pancreatic dorsalis), middle (middle pancreatic lobus) and ventral (lobus pancreatis ventralis) with well-developed interlobar connections made it difficult to distinguish between the 3 lobes. Histologically the pancreas of adult Kestrel (Falco tinnunculus) was covered by very thin layer of connective tissue with mesothelial cells, Connective tissue septa extended from capsule into parenchyma of pancreas dividing it in to many lobules. These septa were very thin and some of them carried blood vessels distributed all over the pancreas. The exocrine portion was constituted from serous acini with pyramidal shaped cells which had dark rounded nucleus in the middle part of the cell. Acidophilic granules found in the apices of cells. Centro acinar cells found as one or two nuclei in the center of the pancreatic acini. The endocrine portion (islets of Langerhans) was formed from clusters of endocrine cells in shape of oval or rounded pale structures with different sizes. The small one has mean diameter of 40.02±0.9 µm while the large one has diameter of 126.3±3.8 µm. Few endocrine cells were seen distributed as single cells among the pancreatic acini.

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Section: Discussionsupporting

confidence: 72%

A gross anatomical and histological study of pancreas in adult Kestrel (Falco tinnunculus)

Al-Haaik¹

2019

IJVS

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“…In looking for a general rule that applies to the spatial arrangement of the spinal efferent neurons, it is important to clarify whether such topographic features of the sympathetic preganglionic cell pools can also be found in the preganglionic cell pool of other vertebrates. Previous retrograde labeling studies in nonmammals have described the mediolateral arrangement of cells that often accompany a formation of cell pools throughout the intermediate zone of the spinal cord, extending from the central canal to the white matter (teleosts: Funakoshi et al,1995,1996,1997; Goehler and Finger,1996; anurans: Nikundiwe et al,1982; Robertson,1987; Horn and Stofer,1988; Peruzzi and Forehand,1993; Nakano et al,2003; reptiles: Kusuma and Ten Donkelaar,1979; Leong et al,1983; avians, Cabot and Bogan,1987; Cabot et al,1991; Hosoya et al,1992; Ohmori et al,1992; Yip,1986), but it is not yet known whether there is a topographic correlation between the distinct arrangement of the pools and axonal projections of cells; i.e., whether the nuclear location predicts characteristic axonal projections to any specific target. A few conjectures (Robertson,1987; Horn and Stofer,1988; Nakano et al,2003) and a small amount of data (see below) have been provided for the spinal cord of frogs, but the question has remained unresolved.…”

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confidence: 99%

Mediolateral and rostrocaudal topographic organization of the sympathetic preganglionic cell pool in the spinal cord of Xenopus laevis

Nakano

Goris

Atobe

et al. 2009

J of Comparative Neurology

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The sympathetic preganglionic cell pool in Xenopus laevis can be divided into four parts, i.e., the intercalated nucleus (IC) and the intermediolateral nucleus (IML) located respectively at the medial and the lateral borders of the lateral field, the lateral funiculus, and the ventral field within the thoracolumbar spinal segments. We compared the location of the preganglionic cells labeled following tracer application to the paravertebral sympathetic chain with those labeled following application to the celiac ganglion (CG), the adrenal gland (AG), and the splanchnic nerves (SNs) and found that their relative contribution differs depending on the sites. In tracer application to the paravertebral chain ganglia and the sympathetic trunk, 31.4-41.9% and 43.9-58.4% of labeled cells were detected respectively in the IC and in the IML, whereas application to the CG, AG, and on all the SNs, revealed that more than 84% of labeled cells were found in the IML and in the lateral funiculus with less than 8.6% in the IC. The contribution of the ventral field cells was less than 7.5% in all experiments. This type of topographic cytoarchitecture is a character shared with the mammalian preganglionic cell pool, but what distinguishes it from that of mammals is its systematic form throughout the entire longitudinal extent of the pool. In Xenopus, differences of mean soma areas and dendritic projections of labeled cells also suggest that the cell pools are distinguished not only by their location and axonal projections, but also by the morphology of their cells.

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Birds

Dubbeldam¹

1998

The Central Nervous System of Vertebrates

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Sympathetic and sensory neurons projecting into the cervical sympathetic trunk in the chicken

Cited by 5 publications

References 20 publications

A gross anatomical and histological study of pancreas in adult Kestrel (Falco tinnunculus)

A gross anatomical and histological study of pancreas in adult Kestrel (Falco tinnunculus)

Mediolateral and rostrocaudal topographic organization of the sympathetic preganglionic cell pool in the spinal cord of Xenopus laevis

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