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Glossary

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E

  • ear

    The organ of hearing; the external ear

  • ear cap

    worn to prevent and correct 'outstanding' ears

  • ear trumpet

    A funnel-shaped instrument for people with hearing difficulties. The trumpet is designed to gather sound waves and direct them into the ear canal. The short end of the funnel was held to the ear by the user, and the large end directed toward the sound.

  • earthenware

    Pottery made of clay which is fired at a relatively low temperature. Earthenware is often semi-porous, meaning some liquid or air can pass through it. This can be altered by treating the pottery with a glaze.

  • ecraseur

    An instrument used to cut the base of a tumor during surgery. An obsolete term for a snare, especially one of enough strength to cut through the base or pedicle of a tumour.

  • eczema

    A common skin disease where the skin becomes inflamed, it is characterized by itching and bleeding.

  • educational toy

    Toy with an educational or teaching component.

  • effigy

    Sculptured representation of the deceased on a tomb.

  • elective surgery

    Non-essential surgery performed by choice and often used to improve ‘quality of life’.

  • electric switch

    Usually a device that is used to connect or disconnect an electric current to an electric circuit

  • electricity

    Any effect resulting from the existence of stationary or moving electric charges.

  • electrocardiograph

    used to record the electrical activity of the heart

  • electrocorticography set

    electroencephalography ( EEG, is a neurological test that uses an electronic monitoring device to measure and record electrical activity in the brain) with the electrodes applied directly to the cerebral cortex.

  • electrodes

    A conductor which enables a current to go in or out of a particular object, substance or region.

  • electromagnet

    Magnet constructed from a soft iron core around which is wound a coil of wire. A magnetic field is generated when an electric current is passed through the wire.

  • electromagnetic induction

    Use of magnetism to produce an electromotive force (emf). If a bar magnet is pushed through a wire coil, an electric current is induced, in the coil, as long as the magnet is moving. By the same principle, an electric current is induced in the coil if it is rotated around the magnet,

  • electron microscope

    An electron microscope uses a beam of electrons, instead of light, to produce highly magnified images of objects. As electrons have a much smaller wavelength than visible light, this allows a much higher resolution to be achieved

  • electrophoresis

    The process of separating electrons in a solution by passing an electric current through it.

  • electrophysiology

    Branch of physiology that is concerned with the electric phenomena in living bodies.

  • electrostatic machine

    mechanical device that produces static electricity, or electricity at high voltage and low continuous current.

  • electrotherapy

    The passing of electric currents through the body's tissues to stimulate the functioning of nerves and the muscles.

  • electrotherapy machine

    machine used to deliver therapeutic electric shocks to patients

  • elephantiasis

    Condition in which there is large swelling of the tissues due to blockage of lymph vessels. It is usually caused by parasitic worms.

  • embalming

    The application of chemical preservatives to slow the natural decomposition of a corpse. Modern methods were greatly refined in the 1800s. Although they have been widely used in Europe, the custom remains most commonly used in North America. Formaldehyde is the primary embalming fluid used today. It is a preservative injected into the blood system to replace the blood which is drained out. Embalming fluid can also be pumped into the body cavities as well.

  • embryo

    An animal or human at an early stage of development, before birth. In humans the term refers to an unborn child up to the eighth week of development.

  • emetic

    A substance that causes vomiting.

  • endoscope

    an instrument to look at the internal parts of the body. The modern endoscope is a flexible, fibreglass instrument that can be swallowed by a patient or introduced through a tiny incision in the body.

  • endotracheal tube

    A flexible tube inserted nasally, orally, or through a tracheotomy into the trachea to provide an airway

  • enema

    A liquid injected into the anus. Enemas can be carried out for medical reasons, as a treatment for constipation, or as a way to give drugs.

  • enema syringe

    A syringe for adminstering enemas

  • engraving

    A technique to obtain prints from an engraved surface. Engraving is the practice of cutting into a hard, usually flat surface.

  • envelope

    Rectangular, flat container made of flexible material that is folded to produce overlapping seams that are adhered together on two or three edges; often with a flag closure, and intended for small objects or documents.

  • enzyme

    One of a group of complex organic substances formed in the living cells of plants and animals. A catalyst for the chemical reactions of biological processes.

  • epidemic

    A sudden widespread occurance of an infection with high numbers of people affected.

  • epidemiology

    The study of epidemic disease, including its spread, causes and methods of control.

  • epidural

    A technique used in childbirth and gynaecological surgery. An anaesthetic is injected into the epidural space of the spinal cord, usually via a catheter. Sensation is lost in the abdominal, genital and pelvic areas as a result.

  • epilepsy

    A disorder of brain function characterized by seizures that occur suddenly. The seizures can be triggered by fast flashing lights, especially strobe lighting.

  • ergotism

    Poisoning induced from too much medicinal ergot or eating grain infected by ergot (fungus). Symptoms include spasms, cramp and gangrene. Historically known as St Anthony’s fire because a pilgrimage to his tomb was said to cure the symptoms.

  • etching

    Print made from an etched printing plate, which is a metal plate on which a design is made by coating the plate with an acid-resistant substance, creating a design in the coating, and then exposing the plate to acid, which etches the plate where the metal is exposed. For designs incised directly into a copper plate using a burin or graver, use "engravings (prints)."

  • ether

    A volatile liquid (resulting from the action of sulphuric acid upon alcohol) formerly used as an anaesthetic. Ether was usually inhaled.

  • eudiometer

    A glass instrument for measuring changes in volume of gases. The eudiometer is effective during and following chemical reactions. It often resembles a large upside-down test tube with a scale on the side.

  • eugenics

    The study of human improvement by selective breeding, founded in the 1800s by English scientist Sir Francis Galton. Widely discredited after its use by the Nazi regime.

  • euthanasia

    Euthanasia is the action of directly causing the quick and painless death of a person with a terminal disease. It is illegal in most countries and is a controversial subject. In most cases it is performed as part of the patient's wishes.

  • evil eye

    A manifestation of magic, commonly regarded as a curse which may result in bad luck, illness or even death. It has a place in many different cultures.

  • exercise aids

    trial term S&H

  • exercise chair

    used to simulate the trotting of a horse, also known as a chamber horse

  • exploratory surgery

    A surgical operation used to determine the cause of a patient's symptoms.

  • eye

    The organ of sight or vision. In man, and vertebrates generally, it is properly the movable ball or globe in the orbit, but the term often includes the adjacent parts.

  • eye bath

    A small glass or vessel for applying lotion to the eye. This is often necessary to sooth irritation.

  • eye massager

    Instrument to stimulate the action of the eye.

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