| anchoring villus | A chorionic villus that is attached to the decidua basalis. (05 Mar 2000) |
|---|---|
| villus | Origin: L, shaggy hair, a tuft of hair. 1. <anatomy> One of the minute papillary processes on certain vascular membranes; a villosity; as, villi cover the lining of the small intestines of many animals and serve to increase the absorbing surface. 2. <botany> Fine hairs on plants, resembling the pile of velvet. Source: Websters Dictionary (01 Mar 1998) |
| chorionic villus biopsy | Transcervical or transabdominal sampling of the chorionic villi for genetic analysis. (05 Mar 2000) |
| chorionic villus sampling | <procedure> A procedure for obtaining a sample of chorionic villi for the purpose of genetic testing, usually performed between 9 and 12th weeks of pregnancy. Amniocentesis testing has greatly supplanted the use of this form of genetic testing. (27 Sep 1997) |
| primary villus | The first stage of chorionic villus development, with columns of cytotrophoblastic cells covered by syncytiotrophoblast. (05 Mar 2000) |
| secondary villus | An intermediate stage of chorionic villus development following invasion by a connective tissue core. (05 Mar 2000) |
| tertiary villus | The definitive chorionic villus with a vascular core separated from maternal blood by connective tissue, cytotrophoblast, and syncytiotrophoblast. (05 Mar 2000) |
| floating villus | A chorionic villus that is not attached to the decidua basalis, but is "free" in the maternal blood of the intervillous spaces. Synonym: floating villus. (05 Mar 2000) |
| free villus | A chorionic villus that is not attached to the decidua basalis, but is "free" in the maternal blood of the intervillous spaces. Synonym: floating villus. (05 Mar 2000) |
| bone resorption | Bone loss due to osteoclastic activity. (12 Dec 1998) |
| gingival resorption | The exposure of root surface by an apical shift in the position of the gingiva. (12 Dec 1998) |
| resorption | <physiology> The loss of substance through physiologic or pathologic means, such as loss of dentin and cementum of a tooth or of the alveolar process of the mandible or maxilla. Origin: L. Resorbere = to swallow again (10 Mar 1998) |
| resorption atelectasis | The slow partial collapse of a lobe that occurs when communication between alveoli and trachea is obstructed. (05 Mar 2000) |
| resorption lacunae | Tiny depressions, pits, or irregular grooves in bone that is being resorbed by osteoclasts. Synonym: resorption lacunae. (05 Mar 2000) |
| ridge resorption | A loss in the volume and size of the alveolar portion of the mandible or maxilla. (05 Mar 2000) |