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tenont-

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[Gr. tenōn, stem tenont-, tendon] Prefix meaning tendon. SEE: teno-.

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Tenormin

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(tĕn′ĕr-mĭn″) SEE: atenolol.

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tenosynovitis

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(ten″ō-sin″ŏ-vīt′ĭs) [teno- + synovia + -itis] An inflammation of a tendon sheath. SYN: tendosynovitis; tendovaginitis.

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t. hyperplastica Painless swelling of extensor tendons over the wrist joint.

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de Quervain t. SEE: under de Quervain, Fritz.

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tenotomy

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(tĕ-nŏt′ō-mē) Surgical section of a tendon. SYN: tendotomy.

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TENS

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transcutaneous electrical nerve stimulation.

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tense

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(tĕns) 1. Tight, rigid. 2. Anxious, under mental stress.

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tensile strength

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(ten′sĭl) [L. tensilis, stretched, tense] The resistance of a structure to stretching or tearing along its longest axis.

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Tensilon test

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(tĕn′sĭ-lŏn″) A test used in the diagnosis of myasthenia gravis (MG). A short-acting anticholinesterase drug, such as edrophonium chloride or neostigmine, is injected, and the patient is observed for improved muscular strength. The patient is also observed after an injection of a placebo, e.g., saline. Improvement with the active drug, but not the placebo, is a strong indication of MG.

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tensiometer

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(tĕn″sē-ŏm′ĕ-tĕr) [L. tensio, a stretching, + Gr. metron, measure] 1. A device for determining the surface tension of liquids. 2. A device used to measure the amount of force a muscle can produce. Also called cable tensiometer.

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tension

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(ten′shŏn) [L. tensio, a stretching] 1. The act or process of stretching; the state of being strained or stretched. 2. Pressure, force. 3. Expansive force of a gas or vapor. 4. Mental, emotional, or nervous strain.

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arterial t. Tension resulting from the force exerted by the blood pressure on the walls of arteries.

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arterial oxygen t. ABBR: PaO2. The partial pressure of oxygen in the plasma of the arterial blood.

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brain tissue oxygen t. ABBR: PbtO2. The oxygen content of the white matter of the brain. It is determined by inserting a small monitor directly into the brain parenchyma. Normal values are >20 mm Hg.

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intraocular t. The pressure of the fluid within the eyeball. SEE: tonometry; intraocular pressure.

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intravenous t. Force exerted by the blood pressure on the walls of a vein.

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muscular t. The condition of a muscle in which fibers tend to shorten and thus perform work or liberate heat.

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premenstrual t. Premenstrual dysphoric disorder.

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surface t. The molecular attraction of liquid molecules for one another, resulting in an outer boundary that has a minimal surface area.

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