lacuna /la·cu·na/ (lah-ku´nah) pl. lacu´nae [L.]
1. a small pit or hollow cavity.
2. a defect or gap, as in the field of vision (scotoma).lacu´nar
absorption lacuna resorption l.
bone lacuna a small cavity within the bone matrix, containing an osteocyte; from it 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 l.
intervillous lacuna one of the blood spaces of the placenta in which the fetal villi are found.
lateral lacunae venous meshworks within the dura mater on either side of the superior sagittal sinus.
osseous lacuna bone l.
lacuna pharyn´gis a depression at the pharyngeal end of the eustachian tube.
resorption lacuna a pit or groove in developing bone that is undergoing resorption; frequently found to contain osteoclasts.
trophoblastic lacuna intervillous l.
in·ter·vil·lous lacuna ( n t r-vl s)n. One of the spaces in the placenta that contain maternal blood and into which the chorionic villi project. |
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