| DR | degeneration reaction; delivery room; deoxyribose; diabetic retinopathy; diagnostic radiology; digit... |
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| DRG | diagnosis-related group; Division of Research Grants [NIH}; dorsal respiratory group; dorsal root ga... |
| C1 | first cervical nerve; first cervical vertebra; first component of complement |
| C2 | second cervical nerve; second cervical vertebra; second component of complement |
| C3 | third cervical nerve; third cervical vertebra; third component of complement |
| cranial vertebra | A segment of the skull regarded as homologous with a segment of the vertebral column. (05 Mar 2000) |
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| ivory vertebra | A radiographically dense vertebra, usually from metastatic disease, especially lymphoma when solitary. (05 Mar 2000) |
| odontoid vertebra | <botany> A stem, commonly used for the main stem of a whole plant or of an inflorescence. (09 Oct 1997) |
| toothed vertebra | <botany> A stem, commonly used for the main stem of a whole plant or of an inflorescence. (09 Oct 1997) |
| true vertebra | Any one of the cervical, thoracic, or lumbar vertebrae. Synonym: vertebra vera. (05 Mar 2000) |
| ganglion cells of dorsal spinal root | Pseudounipolar nerve cell bodies in the ganglia of the dorsal spinal nerve roots; the sensory spinal nerves are composed of the peripheral axon branches of these sensory ganglion cell's, whereas the central axon branch of each such cell enters the spinal cord as a component of the dorsal root. (05 Mar 2000) |
| medial dorsal cutaneous nerve | <anatomy, nerve> The medial terminal branch of the superficial peroneal nerve, supplying the dorsum of the foot and dorsal nerves to the toes (except adjacent sides of great and second toes). Synonym: nervus cutaneus dorsalis medialis, dorsal medial cutaneous nerve. (05 Mar 2000) |
| superficial dorsal sacrococcygeal ligament | <anatomy> The continuation of the supraspinal ligament from the sacrum to the coccyx. Synonym: ligamentum sacrococcygeum posterius superficiale, superficial posterior sacrococcygeal ligament. (05 Mar 2000) |
| superficial dorsal veins of clitoris | A pair of veins on the dorsum of the clitoris, tributary to the external pudendal vein on either side. Synonym: venae dorsales clitoridis superficiales. (05 Mar 2000) |
| superficial dorsal veins of penis | A pair of veins on the dorsum of the penis superficial to the fascia penis; they are tributaries of the external pudendal veins on each side. Synonym: venae dorsales penis superficiales. (05 Mar 2000) |
| deep dorsal sacrococcygeal ligament | <anatomy> The continuation of the posterior longitudinal ligament uniting the sacrum and coccyx. Synonym: ligamentum sacrococcygeum posterius profundum, deep posterior sacrococcygeal ligament. (05 Mar 2000) |
| deep dorsal vein of clitoris | A tributary of the vesical venous plexus; it runs a course deep to the fascia on the dorsum of the clitoris. Synonym: vena dorsalis clitoridis profunda. (05 Mar 2000) |
| deep dorsal vein of penis | A vein on the dorsum of the penis deep to the fascia of the penis; it is a tributary to the prostatic venous plexus. Synonym: vena dorsalis penis profunda. (05 Mar 2000) |
| dorsal | 1. Pertaining to the back or to any dorsum. 2. Denoting a position more toward the back surface than some other object of reference, same as posterior in human anatomy, superior in the anatomy of quadrupeds. Origin: L. Dorsalis, from dorsum = back (18 Nov 1997) |
| dorsal accessory olivary nucleus | A detached part of the olivary nucleus dorsal to the latter's main body. Synonym: nucleus olivaris accessorius dorsalis. (05 Mar 2000) |