Scanning Electron Microscopic Study of the Vascular Supply of the Equine Hoof.

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  • NASU Tetsuo
    Department of Veterinary Anatomy, Faculty of Agriculture, Miyazaki University
  • YAMANAKA Takashi
    Department of Veterinary Surgery, Faculty of Agriculture, Miyazaki University
  • NAKAI Masaaki
    Department of Veterinary Anatomy, Faculty of Agriculture, Miyazaki University
  • OGAWA Hiroyuki
    Animal Hospital, Faculty of Agriculture, The University of Tokyo

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  • Scanning Electron Microscopic Study of

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The blood supply in the equine hoof was studied by a microvascular casting corrosion technique and scanning electron microscopy in combination with observations of sections of the decalcificated digit. The dermal lamella was observed at the hoof wall and the dermal papilla at the other parts of the hoof. The microvascular architecture of the dermal lamella differed from that of dermal papilla. The vascular cast in the dermal papillar regions indicated that each papilla contained two central vessels (artery and vein), which ran parallel to each other, and the capillary plexus surrounding these vessels. In the dermal lamella region, the vessels consisted of thin parallel sheets arranged in vertical rows. Each sheet was made of branched arteries and veins, both of which were sandwiched between capillary plexus. At the distal and proximal parts of the wall, the vascular casts of the papillae merged to form the vascular sheets of the dermal lamella.

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