Macroanatomical Aspects of the Lumbar Plexus and its Branches in the Sparrowhawk

The aim of the present study is to reveal the anatomical structure of lumbosacral plexus of barn owl. Six barn owls were included in the study. Nerves originating from plexus were dissected individually, and findings of innervation areas of nerves were determined. Lumbosacral plexus of barn owl was observed to be formed by ventral rami of ten synsacral spinal nerves. It was found that while the r. cutaneus femoris lateralis, the n. obturatorius, the n. coxalis cranialis, the r. cutaneus femoris medialis, the n. cutaneus femoris cranialis and the n. femoralis originated from the lumbar plexus, the n. isciofemoralis, the n. cutaneus femoris caudalis, the n. coxalis caudalis and the n. ischiadicus originated from the sacral plexus. Consequently, when the results of the study were compared with information of different avian species, it was observed that differences focused on the formation of the lumbar and sacral plexuses and innervation level of digits.

Section: Discussionsupporting

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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The lumbosacral Plexus of the Barn Owl (tyto alba): Formation, branches and distribution

Demiraslan

Gürbüz

Demircioğlu

et al. 2021

“…As it was reported in domesticated avian species (Dursun, 2007; Nickel et al., 1977), in ostrich (El‐Mahdy et al., 2010) and duck (Akalan et al., 2019), the thickest nerve that originates from the lumbar plexus in Guinea fowls is also the n. femoralis. This nerve was stated to be splitting into six branches in ostrich (El‐Mahdy et al., 2010), Japanese quails (Can & Ozdemir, 2011) and in sparrow hawks (Balkaya & Ozudogru, 2016). In the helmeted guineafowls, this nerve was observed to be splitting into cranial and caudal two branches which are similar to the case in pigeons (Balkaya & Ozudoğru, 2013).…”

Section: Discussionmentioning

confidence: 99%

“…El‐Mahdy et al. (2010) indicated that the n. fibularis profundus and superficialis continued to the middle of the leg together with in the same epineural sheath and then they were divided into n. fibularis superficial and profundus (Akbulut et al., 2016; Balkaya & Ozudoğru, 2013,2016). In this current study, it was observed that the n. fibularis ended splitting into n. fibularis superficialis and profundus proximolaterally to the m. flexor perforatus digiti IV after leaving the n. ischidicus around the knee joint passing the ansa m. iliofibularis.…”

Section: Discussionmentioning

confidence: 99%

Anatomic investigation of the lumbosacral plexus of the helmeted guinea fowl (Numida meleagris)

Kuru

Türkmenoğlu

2020

The study was conducted for the determination of the main nerves of the lumbosacral plexus in the helmeted guineafowl. Five helmeted guineafowls were used. Fowls were anaesthetised and the a. carotis communis was cut for blood drainage. Body cavities were revealed and were fixated with 10% formaldehyde. Nerves forming the lumbosacral plexus were dissected and photographed. Results were named according to the Nomina Anatomica Avium. It was determined that the lumbosacral plexus forms by 8 synsacral ventral rami from the ventrolateral side of synsacrum which include (2–9) synsacral spinal nerves. It was seen that the lumbar plexus was formed by the ventral rami of the 2nd, 3rd and 4th spinal nerves, and the sacral plexus was formed by the ventral rami of the 5th, 6th, 7th, 8th and 9th synsacral spinal nerves. It was observed that following nerves of n. pubicus (ilioinguinalis), r. cutaneous femoris lateralis, r. cutaneous femoris medialis (n. saphenus), n. femoralis and n. obturatorius originate from the lumbar plexus, and following nerves of n. ischiadicus, the common branch of n. fibularis and n. tibialis originate from the sacral plexus. It was determined that the n. ischiadicus was formed by the truncus cranialis, medianus and caudalis. In conclusion, it was determined that there are macro anatomical differences between different avian species in the quantity, thickness and distribution of the spinal nerves that form the lumbosacral plexus, and in formations of the plexus, and in separations of nerve branches.

A stereological study on calculation of volume values regarding lumbosacral segments of quails

Çakmak

Karadağ

2019

In the study, total segment, grey matter and white matter volume values of lumbosacral segment of spinal cord in quails (Coturnix coturnix japonica) were stereologically examined. Regardless of sex, six adult quails were used as material. After the materials were perfused, they were dissected and their spinal cords were uncovered. Tissue samples were taken from each lumbosacral segment of spinal cord. After the tissue fixation process, 6–7 sections having a 5‐µm thickness were separated in every 50th section as from the first section, where the tissue was seen, among tissue samples of each segment. These segments were stained with haematoxylin–eosin staining. They were photographed via a microscope. By using the Cavalieri's principle, the volume values of both the total segment, grey matter (GM) and white matter (WM) in each lumbosacral segment were separately calculated. All these calculations were performed by using SHTEREOM 1.5 program. As a result, total volume, grey matter and white matter volume values of lumbosacral segments and white matter/total volume, grey matter/total volume, and grey matter/white matter volume fractions were obtained.