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This page offers definitions and phrases of various Erectile Dysfunction related terms.
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Nerve -  A cordlike structure composed of a collection of nerve fibers that conveys impulses between a part of the central nervous system and some other region of the body.
Neurologic -  Pertaining to the brain or nerves.
Neurotransmitter -  A chemical released from a nerve cell that transmits an impulse to another nerve, cell, or organ.
Nitrate -  A form of nitric acid that causes dilation (opening up) of the blood vessels to the heart. Nitroglycerin is a form of nitrate.
Nitric oxide -  A chemical in the body that stimulates production of cGMP, which is necessary for erectile function.
Nitroglycerin -  A medication that is usually taken sublingually (under the tongue) for the relief of angina. It may also be applied to the chest in a paste form for the prevention of angina.
Nocturnal -  Occurring or active at night.
Nocturnal penile tumescence (NPT) study -  A specialized study that evaluates the frequency and the quality of nocturnal erections.
Non-insulin dependent diabetes mellitus -  Diabetes in which the body does not respond adequately to insulin.
Noninvasive -  Not requiring any incision or insertion of an instrument or substance into the body.