Nerve compression
Pinching’ of a nerve that is due to too much pressure on it. For example, a woman’s sciatic nerve may be painfully compressed by the weight and position of the fetus during the latter part of pregnancy.
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- Nerve conduction study
Nerve conduction velocity test.
- Nerve conduction velocity test
An electrical test used to detect nerve conditions. In the nerve conduction velocity (NCV) test, the nerve is electrically stimulated by one electrode while other electrodes detect the electrical impulse “down stream” from the first electrode. The NCV test is usually done with surface patch electrodes similar to those used for an EKG (electrocardiogram). The […]
- Nerve growth factor
A naturally occurring substance that enhances the growth and survival of cholinergic nerves.
- Nerve palsy, laryngeal
Paralysis of the recurrent laryngeal nerve, a branch of the vagus nerve (a long and important nerve that originates in the brainstem and runs down to the colon). After the recurrent laryngeal nerve leaves the vagus nerve, it goes down into the chest and then loops back up to supply the larynx (the voice box). […]
- Nerve pathways, visual
The optic nerves serving the eyes join behind the eyes just in front of the pituitary gland to form a cross-shaped structure called the optic chiasma. Within the optic chiasma some of the nerve fibers cross. The fibers from the nasal (inside) half of each retina cross over, but those from the temporal (outside) sides […]