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Medical Topics

Acclimatization
The adjustments of a human body or other organism to a new environment.
Acetaminophen

C8H9NO2

More commonly known as Paracetamol, a widely used over-the-counter analgesic.

Acetyl-Salicyclic Acid

CH3COOC6H4COOH

Commonly known as Aspirin, a white solid. Used in medicine as an antipyretic and analgesic.

Acology
The science of remedies.
Anomia
A neurological disorder which causes a marked inability to name otherwise familiar stimuli.
Apgar Scale
Standardized scale that is used to determine the physical status of an infant at birth.
Apgar, Virginia
Professor of anesthesiology at the New York Columbia-Presbyterian Medical Center, devised the Apgar Scale in 1953.
Apical Turn
The final turn in the spiral of the cochlea furthest from the oval and round windows.
Apothecaries Ounce
Once used as a measurement of weight for drugs and other medical substances.
Aspirin
Common name for Acetyl-Salicyclic Acid.
Audiogram
Graph of hearing threshold level as a function of frequency.
Audiometer
An instrument for measuring hearing acuity.
Auditory Anomia
A neurological disorder which causes a marked inability to name otherwise familiar acoustic stimuli such as a door bell or motor vehicle.
Auditory Cortex
Region of the cortex devoted to the analysis of sound information.
Auditory Nerve
Bundle of nerve fibers that carry information from the cochlea to the higher stages of the auditory system.
Biotin
Commonly known as vitamin H.
Blood
A liquid that circulates inside the bodies of animals.
Carcinogens
Substances known to cause cancer.
CH3COOC6H4COOH
Chemical formula for Acetyl-Salicyclic Acid.
Cochlea
A snail shaped mechanism in the inner ear that contain hair cells of basilar membrane that vibrate to aid in frequency recognition.
Conductive Hearing Loss
Hearing loss due to the impairment of sound transmission before it reaches the inner ear.
Cyanocobolamin
Commonly known as vitamin B12.
Diaphoretic
Any substance which induces perspiration when administered to a patient.
Ear
The human ear, as a sound receiver, has to operate under a wide range of conditions.
Earmuff
Hearing protector worn over the pinna of an ear.
Earplug
Hearing protector that is inserted into the ear canal.
Epsom Salts
Common name for Magnesium Sulphate.
Excitotoxin
An excitotoxin is a toxic molecule that stimulates nerve cells so much that they are damaged or killed.
Explosive Decompression
A very rapid reduction of air pressure inside a cabin, coming to a new static condition of balance with the external pressure.
Genetic Engineering
A man-made method of altering the genes to change the characteristics of an organism.
Grain
An individual crystal in a poly-crystalline metal or alloy.
Hearing
The subjective human response to sound.
Hearing Damage
A person exposed to high noise levels can suffer hearing damage. The damage may be gradual or traumatic.
Hearing Protector
Personal device worn to reduce harmful auditory or annoying subjective effects of sound.
Hippocrates
He believed that "the four fluids or humours of the body (blood, phlegm, yellow bile and black bile) are the primary seats of disease."
Hyperbarism
Disturbances in the body resulting from an excess of the ambient pressure over that within the body fluids, tissues, and cavities.
Hyperoxia
A condition in which the total oxygen content of the body is increased above that normally existing at sea level.
Hypobarism
Disturbances resulting from a decrease of ambient pressure to less than that within the body fluids, tissues, and cavities.
Kidney
An organ in the body which is used for excretion.
Laughing Gas
Nitrous oxide, an anaesthetic.
Magnesium Citrate

C6H6O7Mg

Used medicinally as a saline laxative and to empty the bowel prior to a surgery.

Magnesium Stearate

C36H70MgO4

Widely regarded as harmless, it is often used as a diluent in the manufacture of medical tablets.

Niacin
Vitamin B3 is a crystalline acid found in meat and yeast and produced by the oxidation of nicotine.
Nicotinic Acid
Vitamin B3 is a crystalline acid found in meat and yeast and produced by the oxidation of nicotine.
Nobel Prize
Awarded annually as per Alfred Nobel′s last will and testament.
Otologist
A physician who specializes in the ear and its diseases.
Pathogen
Any microorganism or substance that causes disease.
Presbycusis
Gradual and biologically normal loss of acute hearing with advancing age.
Protein
A very large, naturally occurring polyamide formed from a selection of the 20 or so naturally occurring amino acids.
Rad
The rad is a unit used to measure absorbed radiation dose.
Radiation Absorbed Dose
The rad is a unit used to measure absorbed radiation dose.
Riboflavin
Commonly known as vitamin B2.
Schneider Index
A composite weighted index of pulse and blood-pressure response to exercise, utilized as a test of physical efficiency.
Sensation Level
The level of psychophysiologic stimulation above the threshold.
Significant Threshold Shift
A shift in hearing threshold, outside the range of audiometric testing variability.
Smell
Human can detect around 10000 different smells.
Synaesthesia
A cross talk effect in the brain in which one sensory pathway links across to another, resulting in two outputs from one input.
Teratogen
A substance that can cause deformities in embryos. Dioxin is a teratogen.
Toxic Vapours
Vapors emitted by a substance that can do bodily harm.
Vein
A blood vessel that carries blood towards the heart.
Virus
A small microbe. Viruses cause diseases such as the common cold, flu, polio and smallpox.

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Science & Engineering Encyclopaedia Version 2.4 © 2001-2010 Dirac Delta Consultants Limited