Glossary

N - S

 

 
N
Neoplasm [ neo- +Greek plasma, thing formed] New growth; an abnormal tissue that grows by cellular proliferation more rapidly than normal and continues to grow after the stimuli that initiated the new growth cease. The term tumor, which literally means swelling, is frequently used synonymously with the word neoplasm.

Nerves: Bundles of fibers (outside the brain and spinal cord).

Nerve Entrapment: A region of mechanical neuritis in which the nerve is maintained in an irritated state by external pressure created by encroachment or impingement from a nearby anatomical structure; for example, pressure on the median nerve by swollen tendons and their sheaths in the carpal tunnel lead to the carpal tunnel syndrome.
Nerve Tracts: Nerve cell bodies of functionally related neurons tend to mass together, and their fibers, if long, tend to run parallel to one another in bundles. Within the cord such bundles are called tracts.
Neuritis: Inflammation of a nerve, marked by neuralgia (nerve pain), hyperesthesia (hypersensitivity), anesthesia (numbness), or parasthesia (undefined pain), paralysis or muscular astrophy in the region supplied by the affected nerve.
Neuroma: [ neuro- nerve –oma, tumor] A general term for any neoplasm (growth) derived from cells of the nervous system.

Neurolysis: Freeing of nerve from inflammatory adhesions.

Neuropathy: [neuro+ Greek pathos, suffering] Any disease of the nervous system.

Neurosensory Testing: See www.sensorymanagement.com.

 
P

Peripheral nervous system: All the nerves that come out from the brain and spinal cord, extending to receive sensory stimulus from the skin, comprise the peripheral nervous system.

Plexus: When adjacent nerves exchange bundles of fibers, weaving a web or network of communicating nerve fibres.
S  
Schwann cell: Also called a neurolemma cell, present on all peripheral nerves and responsible for many functions including the promotion of nerve regeneration following injury to the nerve.

Schwann cell sheath (neurolemma sheath): The sheath surrounding the nerve fibre.