Lacuna (histology)
| Lacuna | |
|---|---|
| Anatomical terminology] |
In histology, a lacuna is a small space, containing an osteocyte in bone,[1] or chondrocyte in cartilage.
Bone
The lacunae are situated between the
canaliculi
. A lacuna never contains more than one osteocyte. Sinuses are an example of lacuna.
Cartilage
The cartilage cells or
chondrocytes are contained in cavities in the matrix, called cartilage lacunae; around these, the matrix is arranged in concentric lines as if it had been formed in successive portions around the cartilage cells. This constitutes the so-called capsule of the space. Each lacuna is generally occupied by a single cell, but during the division of the cells, it may contain two, four, or eight cells. Lacunae are found between narrow sheets of calcified matrix that are known as lamellae (/ləˈmɛli/ lə-MEL-ee
).
See also
References
This article incorporates text in the public domain from page 90 of the 20th edition of Gray's Anatomy (1918)
- PMID 14996569.
External links
- aplab[dead link] - BioWeb at University of Wisconsin System
- Bone histology photomicrographs
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