Mindblown: a blog about philosophy.
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Friedreich’s sign
Sudden collapse of the cervical veins that were previously distended at each diastole. The cause is an adherent pericardium.
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Moist friction
Friction using a lubricant, such as a liquid, lotion, or oil.
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Dry friction
Friction using no liquid, or other form of lubricant.
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Deep transverse friction
A massage technique in which stroking is applied across the longitudinal direction of the tissues of muscles, tendons, ligaments, or fascia to prevent adhesions, increase mobility of the tissue, and align new fibers along the lines of stress.
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Fricke’s bandage
A special bandage for supporting and immobilizing the scrotum.
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Freund’s adjuvant
A mixture of killed microorganisms, usually mycobacteria, in an oil and water emulsion. The material is administered to induce antibody formation. Because the oil retards absorption of the mixture, the antibody response is much greater than if the killed microorganisms were administered alone.
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Fresnel membrane prism
A prism that can be applied to an eyeglass lens to correct double vision (e.g., in patients with ocular nerve palsies or difficulties with ocular convergence).
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Fresnel lenses
A magnifying glass that distorts vision, preventing the eye from fixating. Under its influence spontaneous and gaze-specific nystagmus can be precisely evaluated.
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Frequency of breathing
The number of spontaneous or machine-generated breaths per unit time.
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Freon
Trade name of a group of hydrocarbon gases previously used as a refrigerant and propellant in metered dose inhalers.
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