trophoblastic lacuna

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

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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.

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trophoblastic lacuna

n.

One of the spaces in the chorion that becomes an intervillous space after the chorionic villi are formed.