| theca folliculi | The wall of a vesicular ovarian follicle. See: tunica externa, tunica interna thecae folliculi. (05 Mar 2000) |
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| theca interna | <embryology> The inner cellular and vascular layer of the vesicular ovarian follicle. There is evidence that the epithelioid cells produce oestrogen and contribute to the formation of the corpus luteum after ovulation. Synonym: theca interna. (05 Mar 2000) |
| theca interna cone | The conical thickening of thecal cells of an ovarian follicle with its apex pointed toward the surface. (05 Mar 2000) |
| theca lutein cell | A steroid secretory cell of the corpus luteum that comes from the theca interna of the ovarian follicle at the time of ovulation. Synonym: paraluteal cell, paralutein cell. (05 Mar 2000) |
| theca tendinis | A sheath of synovial membrane enveloping certain of the tendons; it contains a small amount of synovial fluid. Synonym: vagina synovialis tendinis, mucous sheath of tendon, theca tendinis, vagina mucosa tendinis, vaginal synovial membrane. (05 Mar 2000) |
| theca vertebralis | Single-layered strong membrane, comparable to and continuous with (at foramen magnum) the meningeal layer of the intracranial dura mater of the brain. It does not (in contrast to the dura mater of brain) adhere to the enveloping bony structures (vertebrae) or their periosteum, being separated from the latter by a considerable space, the vertebral epidural space-a true space containing the internal vertebral venous plexus embedded in a matrix of epidural fat. Synonym: dura mater spinalis, endorrhachis, theca vertebralis. (05 Mar 2000) |
| thecal | Relating to a sheath, especially a tendon sheath. Origin: see theca (05 Mar 2000) |
| thecal abscess | Suppuration in a sheath or capsule. (05 Mar 2000) |
| thecal whitlow | Suppurative lesion of distal phalanx; may involve tendon sheath and bone. (05 Mar 2000) |
| thecaphore | <botany> A surface or organ bearing a theca, or covered with thecae. See Basigynium. Origin: Theca + Gr. To bear: cf. F. Thecaphore. Source: Websters Dictionary (01 Mar 1998) |
| thecasporous | <botany> Having the spores in thecae, or cases. Source: Websters Dictionary (01 Mar 1998) |
| thecata | <zoology> Same as Thecophora. Origin: NL, from Gr. A case. Source: Websters Dictionary (01 Mar 1998) |
| thecitis | Inflammation of the sheath of a tendon. Origin: G. Theke, box (sheath), + -itis, inflammation (05 Mar 2000) |
| thecodactyl | <zoology> Any one of a group of lizards of the Gecko tribe, having the toes broad, and furnished with a groove in which the claws can be concealed. Origin: case + finger. Source: Websters Dictionary (01 Mar 1998) |
| thecodont | <paleontology> One of the Thecodontia. 1. <anatomy> Having the teeth inserted in sockets in the alveoli of the jaws. 2. <paleontology> Of or pertaining to the thecodonts. Origin: Gr. A case +, a tooth. Source: Websters Dictionary (01 Mar 1998) |