| HPC | hemangiopericytoma; hippocampal pyramidal cell; history of present complaint; holoprosencephaly; hyd... |
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| HSPM | hippocampal synaptic plasma membrane |
| MMMF | Man-Made Mineral Fibres |
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| MF | Mossy Fiber |
| 3H | Hippocampal |
| HPC | Hippocampal |
| HF | Hippocampal Formation |
| mossy fibres, hippocampal | Axons of certain cells in the dentate gyrus. They project to the polymorphic layer of the dentate gyrus and to the proximal dendrites of pyramidal cells of the hippocampus. These mossy fibres should not be confused with mossy fibres that are cerebellar afferents (see nerve fibres). (12 Dec 1998) |
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| mossy fibres | Highly branched nerve fibre's in the cerebellar cortex that terminate in rosette formations and synapse upon granule cell dendrites. (05 Mar 2000) |
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| mossy | 1. Overgrown with moss; abounding with or edged with moss; as, mossy trees; mossy streams. "Old trees are more mossy far than young." (Bacon) 2. Resembling moss; as, mossy green. Origin: Mossier; Mossiest. Source: Websters Dictionary (01 Mar 1998) |
| mossy cell | One of the two types of neuroglia cell's, consisting of a rather large body with numerous short branching processes. (05 Mar 2000) |
| mossy foot | A profuse velvety papillomatous growth that develops large warty projections; caused by chronic lymphedema and stasis with maceration and associated infection. Synonym: lymphedematous keratoderma, lymphostatic verrucosis. (05 Mar 2000) |
| hippocampal | <anatomy> Of or pertaining to the hippocampus. Source: Websters Dictionary (01 Mar 1998) |
| hippocampal commissure | The triangular subcallosal plate of commissural fibres resulting from the converging of the right and left fornix bundles which exchange numerous fibres and which curve back in the contralateral fornix to end in the hippocampus of the opposite side. Synonym: commissura hippocampi, commissure of fornix, delta fornicis, hippocampal commissure, psalterium, transverse fornix. (05 Mar 2000) |
| hippocampal convolution | A long convolution on the medial surface of the temporal lobe, forming the lower part of the fornicate gyrus, extending from behind the splenium corporis callosi forward along the dentate gyrus of the hippocampus from which it is demarcated by the hippocampal fissure. The anterior extreme of the gyrus curves back upon itself, forming the uncus, the major location of the olfactory cortex. See: entorhinal area. Synonym: gyrus parahippocampalis, hippocampal convolution, hippocampal gyrus. (05 Mar 2000) |
| hippocampal fissure | A shallow groove between the dentate gyrus and the parahippocampal gyrus; the remains of a fissure extending deep into the hippocampus between Ammon's horn and the dentate gyrus which becomes obliterated during foetal development. Synonym: sulcus hippocampi, dentate fissure, fissura dentata, fissura hippocampi, hippocampal fissure. (05 Mar 2000) |
| hippocampal gyrus | A long convolution on the medial surface of the temporal lobe, forming the lower part of the fornicate gyrus, extending from behind the splenium corporis callosi forward along the dentate gyrus of the hippocampus from which it is demarcated by the hippocampal fissure. The anterior extreme of the gyrus curves back upon itself, forming the uncus, the major location of the olfactory cortex. See: entorhinal area. Synonym: gyrus parahippocampalis, hippocampal convolution, hippocampal gyrus. (05 Mar 2000) |
| hippocampal sclerosis | A loss of cortical neurons and a reactive astrocytosis in the hippocampal regions of some persons with epilepsy. (05 Mar 2000) |
| hippocampal sulcus | A shallow groove between the dentate gyrus and the parahippocampal gyrus; the remains of a fissure extending deep into the hippocampus between Ammon's horn and the dentate gyrus which becomes obliterated during foetal development. Synonym: sulcus hippocampi, dentate fissure, fissura dentata, fissura hippocampi, hippocampal fissure. (05 Mar 2000) |
| accelerator fibres | Postganglionic sympathetic nerve fibre's originating in the superior, middle, and inferior cervical ganglia of the sympathetic trunk, conveying nervous impulses to the heart that increase the rapidity and force of the cardiac pulsations. Synonym: augmentor fibres. (05 Mar 2000) |
| adrenergic fibres | Nerve fibres liberating catecholamines at a synapse after an impulse. (12 Dec 1998) |
| afferent fibres | Those that convey impulses to a ganglion or to a nerve centre in the brain or spinal cord. (05 Mar 2000) |
| A fibres | Myelinated nerve fibre's in somatic nerves, measuring 1 to 22 um in diameter, conducting nerve impulses at a rate of 6 to 120 m/sec. (05 Mar 2000) |
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