osseous lacuna


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lacuna

 [lah-ku´nah] (L.)
1. a small pit or hollow cavity.
2. a defect or gap, as in the field of vision (scotoma). adj., adj lacu´nar.
absorption lacuna resorption lacuna.
bone lacuna a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.
cartilage lacuna any of the small cavities within the cartilage matrix, containing a chondrocyte.
Howship's lacuna resorption lacuna.
intervillous lacuna one of the spaces of the placenta occupied by maternal blood, into which the fetal villi project.
osseous lacuna bone lacuna.
lacuna pharyn´gis a depression of the pharyngeal end of the eustachian tube.
resorption lacuna a pit or concavity found in bones undergoing resorption, frequently containing osteoclasts. Similar lacunae also may be found in eroding surfaces of cementum.

os·se·ous la·cu·na

a cavity in bony tissue occupied by an osteocyte.

os·se·ous la·cu·na

(os'ē-ŭs lă-kū'nă )
Acavity in bony tissue occupied by an osteocyte.

lacuna

pl. lacunae [L.]
1. a small pit or hollow cavity.
2. a defect or gap, as in the field of vision (scotoma).

absorption lacuna
a pit or groove in developing bone that is undergoing resorption; frequently found to contain osteoclasts.
bone lacuna
a small cavity within the bone matrix, containing an osteocyte, and from which slender canaliculi radiate and penetrate the adjacent lamellae to anastomose with the canaliculi of neighboring lacunae, thus forming a system of cavities interconnected by minute canals.
cartilage lacuna
any of the small cavities within the cartilage matrix, containing a chondrocyte.
Howship's lacuna
the concave cavities which are formed by osteoclasts in the process of bone resorption.
osseous lacuna
bone lacuna (see above).
osteocytic lacuna
see bone lacuna (above).
urethral lacuna
numerous small depressions or pits in the mucous membrane of the urethra.
vascular lacuna
a breach in any membrane or other tissue which is navigated by blood vessels.