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 |
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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 |
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ISSN: | 1820-7448 1820-7448 |
DOI: | 10.2478/acve-2014-0028 |