Origin and distribution of the sciatic nerve in wild boars fetuses (Sus scrofa scrofa)

Abstract

To analyze the origin and distribution of the sciatic nerve, 22 fetuses of wild boar were used, obtained from the collection of the Wild Animal Research Laboratory (LAPAS), of the College of Veterinary Medicine of Universidade Federal de Uberlândia (FAMEV-UFU). The thoracic descending aorta was cannulated for injection of formaldehyde in the craniocaudal direction, and the pieces were kept submerged in this solution for at least of 48h before starting the dissections. The sciatic nerve originates from the ventral branches of spinal nerves L5 to S3 and it sent branches to the middle and superfi cial gluteal muscles, biceps femoris, semimembranosus, semitendinosus, piriformis, adductor and tensor fascia lata, the caudal cutaneous sural nerve originates from the sciatic or common fibular or tibial nerves.

Keywords

• Anatomy
• Innervation
• Lumbosacral plexus
• Suidae