Glossary E

ECG

See Electrocardiogram (ECG)

EEG

See Electroencephalogram (EEG)

Electrocardiogram (ECG)

A test that records the electrical activity of the heart.

Electroencephalogram (EEG)

A test that records of the tiny electrical impulses produced by the brain's activity. By measuring characteristic wave patterns, the EEG can help diagnose certain conditions of the brain.

Electromyogram (EMG)

A diagnostic test that records the electrical activity of muscles. In the test, small electrodes are placed on or in the skin; the patterns of electrical activity are projected on a screen or over a loudspeaker.

EMG

See Electromyogram (EMG)

Endogenous

Originating or produced within an organism, tissue, or cell. A disease caused by factors within the body.

Endoscopy

Examination of the interior of a canal or hollow organ by means of an illuminated, flexible optical tube (an endoscope).

Endothelial

Relating to the Endothelium.

Endothelium

A layer of cells lining the closed internal specaes of the body, such as the inside of blood lymphaatic vessels, and the heart.

Eosinophil

A type of Leukocyte. The numbers of eosinophils in blood often rises with allergic reactions and parasitic infections.

Epinephrine

Also called adrenalin. A neurochemical produced by the adrenal glands that stimulates the sympathetic nervous system.

Epithelial

Relating to the Epithelium.