| dendritic spine | Wine glass or mushroom shaped protrusions from dendrites that represent the principal site of termination of excitatory afferent neurons on interneurons, especially in the cortical regions. (18 Nov 1997) |
|---|---|
| dendritic spines | Variably long excrescences of nerve cell dendrites, varying in shape from small knobs to thornlike or filamentous processes, usually more numerous on distal dendrite arborizations than on the proximal part of dendritic trunks; they are a preferential site of synaptic axodendritic contact; sparse or absent in some types of nerve cells (motor neurons, the large cells of the globus pallidus, stellate cells of the cerebral cortex), exceedingly numerous in others such as the pyramidal cells of the cerebral cortex and the Purkinje cells of the cerebellar cortex. Synonym: dendritic thorns, gemmule. (05 Mar 2000) |
| dendritic thorns | Variably long excrescences of nerve cell dendrites, varying in shape from small knobs to thornlike or filamentous processes, usually more numerous on distal dendrite arborizations than on the proximal part of dendritic trunks; they are a preferential site of synaptic axodendritic contact; sparse or absent in some types of nerve cells (motor neurons, the large cells of the globus pallidus, stellate cells of the cerebral cortex), exceedingly numerous in others such as the pyramidal cells of the cerebral cortex and the Purkinje cells of the cerebellar cortex. Synonym: dendritic thorns, gemmule. (05 Mar 2000) |
| dendritic tree | Characteristic (tree like) pattern of outgrowths of neuronal dendrites. (18 Nov 1997) |
| dendritical | Pertaining to a dendrite, or to arborescent crystallization; having a form resembling a shrub or tree; arborescent. Source: Websters Dictionary (01 Mar 1998) |
| dendrocla | <zoology> A division of the Turbellaria in which the digestive cavity gives off lateral branches, which are often divided into smaller branchlets. Origin: NL, fr. Gr. Tree + hollow. Source: Websters Dictionary (01 Mar 1998) |
| dendrogram | A treelike figure used to represent graphically a hierarchy. Origin: dendron, tree, + gramma, a drawing (05 Mar 2000) |
| dendroid | Tree-like in form but not in size. Compare: arborescent. (09 Oct 1997) |
| dendroidal | Resembling a shrub or tree in form; treelike. Origin: Gr. Treelike; tree + form: cf. F. Dendroide. Source: Websters Dictionary (01 Mar 1998) |
| dendrolite | <paleontology> A petrified or fossil shrub, plant, or part of a plant. Origin: Gr. Tree: cf. F. Dendrolithe. Source: Websters Dictionary (01 Mar 1998) |
| dendrologist | One versed in the natural history of trees. Source: Websters Dictionary (01 Mar 1998) |
| dendrologous | Relating to dendrology. Source: Websters Dictionary (01 Mar 1998) |
| dendrology | <study> A discourse or treatise on trees; the natural history of trees. Origin: Gr. Tree: cf. F. Dendrologie. Source: Websters Dictionary (01 Mar 1998) |
| dendrometer | An instrument to measure the height and diameter of trees. Origin: Gr. Tree: cf. F. Dendrometre. Source: Websters Dictionary (01 Mar 1998) |
| dendron | Synonym: dendrite. Origin: G. A tree (05 Mar 2000) |