| gingival zone | That portion of the oral mucosa which surrounds the teeth and is firmly attached to the underlying alveolar bone. (05 Mar 2000) |
|---|---|
| reflexogenic zone | The area or zone where stimulation will elicit a given reflex. (05 Mar 2000) |
| pectinate zone | The outer two-thirds of the basilar membrane of the cochlear duct. Synonym: zona pectinata. (05 Mar 2000) |
| pellucid zone | <cell biology, gynaecology> A translucent, elastic, noncellular layer surrounding the ovum of many mammals. (11 May 1997) |
| cervical zone | The lower fourth of the pregnant uterus, attachment of the placenta to any part of which may cause dangerous haemorrhage. Synonym: cervical zone. (05 Mar 2000) |
| cervical zone of tooth | The slightly constricted part of a tooth, between the crown and the root. Synonym: cervix dentis, cervical margin of tooth, cervical zone of tooth, collum dentis, dental neck. (05 Mar 2000) |
| peritubular zone | The dentinal matrix surrounding the odontoblastic process; it is more highly calcified and contains finer collagen fibres than does the rest of the dentinal matrix. (05 Mar 2000) |
| grenz zone | In histopathology, a narrow layer beneath the epidermis that is not infiltrated or involved in the same way as are the lower layers of the dermis. Origin: Ger. Grenze, borderline, boundary (05 Mar 2000) |
| ciliary zone | The outer, wider zone of the anterior surface of the iris, separated from the pupillary zone by the collarette. Synonym: zona ciliaris. (05 Mar 2000) |
| Weil's basal zone | The layer beneath the odontoblasts of the tooth; it contains reticular fibres but few if any cells. Synonym: Weil's basal zone. (05 Mar 2000) |
| Wernicke's zone | The region of the cerebral cortex thought to be essential for understanding and formulating coherent, propositional speech; it encompasses a large region of the parietal and temporal lobes near the lateral sulcus of the left cerebral hemisphere; corresponding approximately to Brodmann's areas 40, 39, and 22. Synonym: sensory speech centre, Wernicke's area, Wernicke's field, Wernicke's region, Wernicke's zone. (05 Mar 2000) |
| comfort zone | The temperature range between 28캜 and 30캜 at which the naked body is able to maintain the heat balance without either shivering or sweating; in the clothed body the range is from 13캜 to 21캜. (05 Mar 2000) |
| motor zone | That portion of the cerebral cortex, primarily the posterior region of the frontal lobe, near the central sulcus, which when stimulated produces a movement and when injured produces spasticity or paralysis. (05 Mar 2000) |
| polar zone | The region in the vicinity of an electrode applied to the body. See: electrotonus. (05 Mar 2000) |
| haemorrhoidal zone | The part of the anal canal that contains the rectal venous plexus. Synonym: annulus haemorrhoidalis, zona haemorrhoidalis. (05 Mar 2000) |