| SEVC | single electrode voltage clamp |
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| vascular pedicle | The tissues containing arteries and veins of an organ, specifically in chest radiology, the (width of the) mediastinum at the level of the aortic arch and superior vena cava. (05 Mar 2000) |
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| pedicle | 1. A constricted portion or stalk. Synonym: pediculus. 2. A stalk by which a nonsessile tumour is attached to normal tissue. Synonym: pedunculus, peduncle. 3. A stalk through which a flap receives nourishment until its transfer to another site results in the nourishment coming from that site. Origin: L. Pediculus, dim. Of pes, foot (05 Mar 2000) |
| pedicle flap | A skin flap sustained by a blood-carrying stem from the donor site during transfer, in periodontal surgery, a flap used to increase the width of attached gingiva, or to cover a root surface, by moving the attached gingiva, which remains joined at one side, to an adjacent position and suturing the free end. (05 Mar 2000) |
| pedicle graft | A skin flap sustained by a blood-carrying stem from the donor site during transfer, in periodontal surgery, a flap used to increase the width of attached gingiva, or to cover a root surface, by moving the attached gingiva, which remains joined at one side, to an adjacent position and suturing the free end. (05 Mar 2000) |
| pedicle of arch of vertebra | The constricted portion of the arch on either side extending from the body to the lamina; bound intervertebral foramina superiorly and inferiorly. Synonym: pediculus arcus vertebrae, radix arcus vertebrae. (05 Mar 2000) |
| permanent pedicle flap | A pedicle flap in which the pedicle is not severed at the time of transfer, so that it continues to supply blood from the donor site to the recipient area. (05 Mar 2000) |
| double pedicle flap | A flap with two pedicles, one at each end. Synonym: double pedicle flap. (05 Mar 2000) |
| tubed pedicle flap | A flap in which the sides of the pedicle are sutured together to create a tube, with the entire surface covered by skin. Synonym: Filatov flap, Filatov-Gillies flap, Filatov-Gillies tubed pedicle, rope flap, tubed pedicle flap. (05 Mar 2000) |
| Filatov-Gillies tubed pedicle | A flap in which the sides of the pedicle are sutured together to create a tube, with the entire surface covered by skin. Synonym: Filatov flap, Filatov-Gillies flap, Filatov-Gillies tubed pedicle, rope flap, tubed pedicle flap. (05 Mar 2000) |
| Gant's clamp | A right-angled clamp used in haemorrhoidectomy. (05 Mar 2000) |
| Gaskell's clamp | An instrument for crushing the atrioventricular bundle in experimental animals and thus producing heart block. (05 Mar 2000) |
| Rankin's clamp | A three-bladed clamp used in resection of colon. (05 Mar 2000) |
| gingival clamp | A springlike metal piece encircling or grasping the cervix of a tooth and shaped so as to retract the gingival tissue. (05 Mar 2000) |
| patch clamp | <physiology> A specialised and powerful variant of voltage clamping, in which a patch electrode of relatively large tip diameter (5m) is pressed tightly against the plasma membrane of a cell, forming an electrically tight, gigohm seal. The current flowing through individual ion channels can then be measured. Different variants on this technique allow different surfaces of the plasma membrane to be exposed to the bathing medium: the contact just described is a cell attached patch. If the electrode is pulled away, leaving just a small disc of plasma membrane occluding the tip of the electrode, it is called an inside out patch. If suction is applied to a cell attached patch, bursting the plasma membrane under the electrode, a whole cell patch (similar to an intracellular recording) is formed. If the electrode is withdrawn from the whole cell patch, the membrane fragments adhering to the electrode reform a seal across the tip, forming an outside out patch. (15 Mar 2000) |
| patch-clamp techniques | An electrophysiologic technique for studying cells, cell membranes, and occasionally isolated organelles. All patch-clamp methods rely on a very high-resistance seal between a micropipette and a membrane; the seal is usually attained by gentle suction. The four most common variants include on-cell patch, inside-out patch, outside-out patch, and whole-cell clamp. Patch-clamp methods are commonly used to voltage clamp, that is control the voltage across the membrane and measure current flow, but current-clamp methods, in which the current is controlled and the voltage is measured, are also used. (15 Mar 2000) |
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