Creation Nerves of the Lumbar and Sacral Plexus in California Sea Lions (Zalophus Californianus) and Northern Elephant Seals (Mirounga Angustirostris)/Formiranje Nerava Iz Lumbalnog I Sakralnog Pleksusa Kod Kalifornijskog Morskog Lava (Zalophus Californianus) I Severnomorskog Slona (Mirounga Angustirostris)

The lumbosacral plexus was investigated in the California sea lion and Northern elephant seal. In 9 California sea lions and 2 Northern elephant seals the femoral nerve rises from the ventral branches of the 3 and 4 lumbar nerves, whilst in one male and two specimens of the Northern elephant seal th...

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Veröffentlicht in:Acta veterinaria (Beograd) 2014-09, Vol.64 (3), p.293-306
Hauptverfasser: Damir, Mihelić, Hrvoje, Smodlaka, Suzana, Tkalčić, Lauren, Palmer, Gordan, Mršić, Katarina, Špiranec, Daniel, Špoljarić, Maja, Popović, Draga, Mihelić
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Sprache:eng
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Zusammenfassung:The lumbosacral plexus was investigated in the California sea lion and Northern elephant seal. In 9 California sea lions and 2 Northern elephant seals the femoral nerve rises from the ventral branches of the 3 and 4 lumbar nerves, whilst in one male and two specimens of the Northern elephant seal the 5 lumbar nerve was also involved. Ventral branches of the 3 and 4 lumbar nerves comprised the obturatorius nerve in 7 specimens; in 3 specimens the 5 lumbar nerve additionally supplements the obturatorius nerve. In Northern elephant seals the obturatorius nerve originates from the ventral branches of the 3 , 4 and 5 lumbar nerves. The ischiadic nerve originates from the ventral branches of the 4 , 5 lumbar and 1st sacral nerves in 8 specimens California sea lions and in 2 North elephant seals. In 2 specimens of both species the 2 sacral nerve also participates. The gluteal nerve created ventral branches of the 5 lumbar and 1st sacral nerves in three specimens; however in one specimen the 4 and 5 lumbar nerves gave rise to the same nerve in the Northern elephant seal. In California sea lions the gluteal nerve originates from the ventral branches of the 5 lumbar nerve in seven specimens, nonetheless in 3 specimens the 4 lumbar nerve also participates in its formation. Ispitivan je lumbosakralni pleksus kod kalifornijskih morskih lavova i severnomorskih slonova. Kod devet kalifornijskih morskih lavova i kod dva severnomorska slona, fermoralni nerv je polazio iz ventralne grane trećeg i četvrtog lumbalnog nerva dok je kod jednog mužjaka i dva primerka severnomorskog slona bio uključen i peti lumbalni nerv. Ventralne grane trećeg i četvrtog lumbalnog nerva formiraju n. obturatorius i to kod sedam životinja; kod tri jedinke peti lumbalni nerv takođe doprinosi formiranju n. obturatorius. Kod severnog morskog slona, n. obturatorius se formira iz ventralne grane trećeg, četvrtog i petog lumbalnog nerva. N. ischiadicus potiče iz ventralnih grana četvrtog i petog lumbalnog kao i iz prvog sakralnog nerva i to kod 8 jedinki kalifornijskog morskog lava i kod dve životinje vrste severnomorski slon. Kod po dve životinje obe vrste, drugi sakralni nerv takođe učestvuje u formiranju n. ischiadicus-a. Glutealni nerv je formiran od ventralnih grana petog lumbalnog i prvog sakralnog nerva i to kod tri jedinke; međutim, kod jednog severnomorskog slona, četvrti i peti lumbalni nerv su takođe učestvovali u formiranju glutealnog nerva. Kod kalifornijskih morskih lavova, kod sedam ispit
ISSN:1820-7448
1820-7448
DOI:10.2478/acve-2014-0028