| NE | national emergency; necrotic enteritis; necrotizing enterocolitis; nephropathia epidemica; nerve end... |
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| PVI | patient video interview; peripheral vascular insufficiency; perivascular infiltration; positron volu... |
| IGLE | intraganglionic laminar ending |
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| PVS | perivascular space |
| perivascular | Situated around a vessel. (18 Nov 1997) |
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| perivascular cuffs | See: cuffing. Rotator cuff of shoulder, the upper half of the capsule of the shoulder joint reinforced by the tendons of insertion of the supraspinatus, infraspinatus, teres minor, and subscapularis muscles. Synonym: musculotendinous cuff. (05 Mar 2000) |
| perivascular fibrous capsule | A layer of connective tissue ensheathing the hepatic artery, portal vein, and bile ducts as these ramify within the liver. Synonym: capsula fibrosa perivascularis, perivascular fibrous capsule. Connective tissue capsule surrounding the outer surface of the liver, but continuous with septae of some animals which divide parenchyme into lobule, and with the perivascular fibrous capsule at the porta hepatis. Synonym: tunica fibrosa hepatis, Glisson's capsule. (05 Mar 2000) |
| His' perivascular space | A tunnel-like extension of the subarachnoid space surrounding blood vessels that pass into the brain or spinal cord from the subarachnoid space; the lining of the channel is composed of pia and glial feet of astrocytes; a continuation of the space around capillaries and nerve cells probably does not occur. Synonym: His' perivascular space. (05 Mar 2000) |
| annulospiral ending | One of two types of sensory nerve ending associated with a neuromuscular spindle (the other being the flower-spray ending); after entering the muscle spindle, the fibre divides into two flat ribbon-like branches that wind themselves in rings or spirals about the intrafusal muscle fibres. Synonym: annulospiral organ. (05 Mar 2000) |
| calyciform ending | A synaptic ending in relation to certain neuroepithelial hair cells of the inner ear. (05 Mar 2000) |
| hederiform ending | A type of free sensory ending in the skin. (05 Mar 2000) |
| sole-plate ending | The specialised postsynaptic region of a muscle cell. The motor endplate is immediately across the synaptic cleft from the presynaptic axon terminal. Among its anatomical specializations are junctional folds which harbor a high density of cholinergic receptors. See: neuromuscular junction (12 Dec 1998) |
| nerve ending | <physiology> A connection between excitable cells, by which an excitation is conveyed from one to the other. 1. Chemical synapse: one in which an action potential causes the exocytosis of neurotransmitter from the presynaptic cell, which diffuses across the synaptic cleft and binds to ligand gated ion channels on the post synaptic cell. These ion channels then affect the resting potential of the post synaptic cell. 2. Electrical synapse: one in which electrical connection is made directly through the cytoplasm, via gap junctions. 3. Rectifying synapse: one in which action potentials can only pass across the synapse in one direction (all chemical and some electrical synapses). 4. Excitatory synapse: one in which the firing of the presynaptic cell increases the probability of firing of the postsynaptic cell. 5. Inhibitory synapse: one in which the firing of the presynaptic cell reduces the probability of firing of the postsynaptic cell. (10 Jan 1998) |
| ending | 1. A termination or conclusion. 2. A nerve ending. (05 Mar 2000) |
| epilemmal ending | A nerve ending in close relation to the outer surface of the sarcolemma. (05 Mar 2000) |
| flower-spray ending | One of the two types of sensory nerve ending associated with the neuromuscular spindle (the other being the annulospiral ending); in this type, the fibre branches spread out upon the surface of the intrafusal fibres like a spray of flowers. Synonym: flower-spray organ of Ruffini. (05 Mar 2000) |
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