Morfofisiologia da inervação do diafragma de ovinos

Almeida, Ana Elisa Fernandes de Souza; Wenceslau, Cristiane Valverde; Teixeira, Doralice Severo da Cruz; Araújo, Karla Patrícia Cardoso; Morini, Adriana Caroprezo; Morini, J. C.; Ambrósio, Carlos Eduardo; Miglino, María Angélica; Prada, I L S

doi:10.1590/s0100-736x2008000900002

Cited by 4 publications

(11 citation statements)

References 8 publications

(9 reference statements)

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“…Combined contribution of the ventral branches of C5 and C6 was found in 48 specimens (88.88%), differing from the results found by Getty (1981) [3] for swine and ruminants, and by Dyce, Sack, and Wensing (2010) [11] for domestic ruminants, who reported that this nerve originates from the ventral branches of C5, C6, and C7; this configuration was found in three (5.55%) animals in the present study.…”

Section: Discussioncontrasting

confidence: 73%

Origin and branching of the phrenic nerve (Sus scrofa domesticus Linnaeus, 1758) of the Pen Ar Lan Line

Santos¹,

Balbino²,

Menezes-Reis³

et al. 2019

IJAERS

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Swine farming has increasingly developing worldwide due to advances in genetic improvement, thus, researchers are investigating possible anatomical variations in new lineages. The objective of this study was to assess the origin and branching of the phrenic nerve in 27 swine (Sus scrofa domesticus -Linnaeus, 1758) fetuses of the Pen Ar Lan line-19 males and 8 females. They were dissected after fixing in a 10% formaldehyde solution. The phrenic nerve originated from 51 (94.4%) antimeres of the fifth cervical spinal nerve (C5), 54 (100%) antimeres of the sixth cervical spinal nerve (C6), and six (11.11%) antimeres of the seventh cervical spinal nerve (C7). Considering this distribution, the phrenic nerve emitted fibers to the pericardium and branched into the diaphragm muscle in all specimens evaluated. Six different branching were found, most frequently in the dorsal, lateral, and ventral branches in 22 (40.74%) antimeres, followed by branching to dorsal branches and ventrolateral trunk in 18 antimeres (33.33%). In addition, two of the branching found are not cited in scientific literature, denoting their variability. The dorsal branches were distributed to the pillar muscles in the lumbar part, the ventral branches to the sternal part, and the lateral branches to the dorsal part.

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Section: Discussioncontrasting

confidence: 73%

Origin and branching of the phrenic nerve (Sus scrofa domesticus Linnaeus, 1758) of the Pen Ar Lan Line

Santos¹,

Balbino²,

Menezes-Reis³

et al. 2019

IJAERS

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“…[6][7][8][9][10][11][12][13] On the other hand, our findings are in agreement with other studies that pointed out the contribution of the intercostal nerves to the innervation of the diaphragm. 4,5,[14][15][16][17][18][19] We observed the innervation of the diaphragm by the intercostal nerves 6 to 12, mainly by the 8 th nerve. Rosenblueth et al (1961), 4 even if they observed the participation of the intercostal nerves 4 to 10, observed that the major intercostal nerve acting in the innervation of the diaphragm was the 8 th nerve.…”

Section: Discussionmentioning

confidence: 99%

“…It is also crucial to assist the abdominal muscles during vomiting, coughing, urination, sneezing, defecation, and labor. 4 Almeida et al (2008) 5 describe the intercostal nerves, mainly those from the 7th to the 9 th , as primary efferent pathways for some of these actions or reflexes.…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10][11][12][13] Even the same, in some species, there is a participation also from branches derived from the intercostal nerves. 5,[14][15][16][17][18][19] There are 12 pairs of intercostal nerves. They derive from the ventral branches of the thoracic nerves, do not form plexus and distribute to the walls of the thorax and the abdomen.…”

Section: Introductionmentioning

confidence: 99%

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Participation of the Intercostal Nerves to the Innervation of the Diaphragm Muscle in Cavia porcellus

et al. 2019

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Introduction The diaphragm is the leading respiratory muscle. It is innervated mainly by the diaphragmatic nerve, and, in some species, by the delicate fibers of the intercostal nerves. In guinea pigs, there is no description of these anatomic structures that innerve this important muscle. This study aimed to analyze the participation of the intercostal nerves to the innervations of the diaphragm of guinea pigs of both sexes. Materials and Methods We studied 40 guinea pigs (Cavia porcellus) of both sexes. We fixed and dissected the diaphragm of the specimens used in the experiment to assess the path of the intercostals nerves in both the body antimeres. Results The diaphragm was innervated by the intercostal nerve pairs 6 through 12, and, less frequently, by the 8th nerve (38/40 = 95%), followed by the 7th (36/40 = 90%) and subsequently by the 9th (32/40 = 80%). The 12th nerve presented the lowest frequency (2/20 = 10%) in both genders. All nerve pairs displayed similar occurrence compared with the gender and the antimeric disposition. The only exception was the 9th nerve, which presented a significant variation of the occurrence, both in relation to gender and antimeric disposition. From a statistic point of view, all nerves were independent. We observed no correlation between the gender and their position. Conclusions We shall conclude that the diaphragm of guinea pigs is innervated by the 6th through 12th pairs of intercostal nerves, with the 7th, 8th, and 9th being the primary providers. There is no interference of the variables gender or antimeric disposition on the behavior of the intercostal nerves of guinea pigs as refers to their origin and participation to the innervations of the diaphragm.

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“…Em relação a origem e ramificação do nervo frênico em fetos de suínos da linhagem Pen Ar Lan, observou-se que a contribuição para a formação desse nervo ocorreu principalmente pelo ramos ventrais do quinto nervo espinhal cervical (C5) e sexto nervo espinal cervical (C6), sendo que ramos ventrais do sexto nervo espinhal cervical (C6) foi encontrado em todos os animais analisados. Corraborando com Almeida et al (2008) (MIGLINO et al, 1985), não sendo referido sobre a predominância da trifurcação.…”

Section: Discussionunclassified

Origem e ramificação do nervo frênico em suínos (Sus scrofa domesticus Linnaeus, 1758) da linhagem Pen Ar Lan

Neto¹,

Santos²

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A suinocultura mundial vem se desenvolvendo devido aos avanços no melhoramento genético, e isso tem levado pesquisadores a investigarem possíveis variações anatômicas nas novas linhagens. Objetivou-se verificar a origem e ramificação do nervo frênico em 27 fetos de suínos (sus scrofa domesticus-Linnaeus, 1758) da linhagem Pen Ar Lan, sendo 19 machos e oito fêmeas, que foram dissecados após fixação em solução de formaldeído a 10%. O nervo originou-se em 51 antímeros (94,4%) do quinto nervo espinhal cervical (C5); em 54 antimeros (100%) do sexto nervo espinhal cervical (C6) e em seis antímeros (11,11%) do sétimo nervo espinhal cervical (C7). No que se refere a distribuição, os nervos frênicos emitiram fibras para o pericárdio e, posteriormente, ramificaram-se no músculo diafragma em 100% dos exemplares. Foram observadas seis diferentes ramificações, com maior frequência os ramos dorsal, lateral e ventral em 22 antímeros (40,74%), seguido pela ramificação em ramos dorsal e tronco ventrolateral em 18 antímeros (33,33%). Além disso, foram notadas duas ramificações que não foram encontradas na literatura consultada, demonstrando sua variabilidade. Os ramos dorsais distribuíram-se para os músculos pilares da parte lombar, os ramos ventrais para a parte esternal e os ramos laterais para a parte costal. Palavras-chave: Sistema nervoso periférico. Plexo cervical. Músculo diafragma.

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Morfofisiologia da inervação do diafragma de ovinos

Cited by 4 publications

References 8 publications

Origin and branching of the phrenic nerve (Sus scrofa domesticus Linnaeus, 1758) of the Pen Ar Lan Line

Origin and branching of the phrenic nerve (Sus scrofa domesticus Linnaeus, 1758) of the Pen Ar Lan Line

Participation of the Intercostal Nerves to the Innervation of the Diaphragm Muscle in Cavia porcellus

Origem e ramificação do nervo frênico em suínos (Sus scrofa domesticus Linnaeus, 1758) da linhagem Pen Ar Lan

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