The spiral fold of the caecum in the ostrich (Struthio camelus).

@article{Bezuidenhout1993TheSF,
  title={The spiral fold of the caecum in the ostrich (Struthio camelus).},
  author={Abraham J Bezuidenhout},
  journal={Journal of anatomy},
  year={1993},
  volume={183 ( Pt 3)},
  pages={587-92}
}
The caecum of the ostrich was observed to contain a fold that spiralled approximately 30 times, transforming the lumen into a long, spiral-shaped cavity. The fold consisted of mucosa, muscularis mucosa and submucosa. The proximal part of the fold also contained a central core of muscle originating from the inner circular muscle layer of the caecal wall. The distal part was expanded to form a 'frill', thereby enlarging the surface area of the fold. Blood vessels entered the fold at the… CONTINUE READING