Biology:Involucrum

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An involucrum (plural involucra) is a layer of new bone growth outside existing bone.

There are two main contexts:

  • In pyogenic osteomyelitis where it is a layer of living bone that has formed about dead bone.[1] It can be identified by radiographically (i.e., with x-rays).
  • In cetaceans such as whales, it is a thick covering of bone over the middle-ear space.[2][3]

See also

References

  1. ↑ Pineda, Carlos; Espinosa, Rolando; Pena, Angelica (May 2009). "Radiographic Imaging in Osteomyelitis: The Role of Plain Radiography, Computed Tomography, Ultrasonography, Magnetic Resonance Imaging, and Scintigraphy". Semin Plast Surg 23 (2): 080–089. doi:10.1055/s-0029-1214160. PMID 20567730. 
  2. ↑ "Science Word of the Day: Involucrum". National Geographic. 2015-01-05. https://www.nationalgeographic.com/science/phenomena/2015/01/05/science-word-of-the-day-involucrum/. 
  3. ↑ Switek, Brian (1 December 2010). "How Did Whales Evolve?". Smithsonian. https://www.smithsonianmag.com/science-nature/how-did-whales-evolve-73276956/. Retrieved 30 October 2018. 




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