Myelin Definition

Myelin:

The lipid-rich sheath investing many axons in both the central and peripheral nervous systems. The myelin sheath is an electrical insulator and allows faster and more energetically efficient conduction of impulses. The sheath is formed by the cell membranes of glial cells (SCHWANN CELLS in the peripheral and OLIGODENDROGLIA in the central nervous system). Deterioration of the sheath in DEMYELINATING DISEASES is a serious clinical problem.

Synonym: myelin sheath.

Terms Related to Myelin

Central Nervous System Autoimmune Demyelinating Diseases

Conditions characterized by loss or dysfunction of myelin (see MYELIN SHEATH) in the brain, spinal cord, or optic nerves secondary to autoimmune mediated processes. This …
Oligodendroglia

A class of large neuroglial (macroglial) cells in the central nervous system. Oligodendroglia may be called interfascicular, perivascular, or perineuronal (not the same as PERINEURONAL …
CNS Autoimmune Demyelinating Diseases

Conditions characterized by loss or dysfunction of myelin (see MYELIN SHEATH) in the brain, spinal cord, or optic nerves secondary to autoimmune mediated processes. This …
Perineuronal Oligodendroglia

A class of large neuroglial (macroglial) cells in the central nervous system. Oligodendroglia may be called interfascicular, perivascular, or perineuronal (not the same as PERINEURONAL …
Cerebral Autoimmune Demyelinating Diseases

Conditions characterized by loss or dysfunction of myelin (see MYELIN SHEATH) in the brain, spinal cord, or optic nerves secondary to autoimmune mediated processes. This …

Medical Conditions Dictionary

Myelin Definition

Terms Related to Myelin

Central Nervous System Autoimmune Demyelinating Diseases

Oligodendroglia

CNS Autoimmune Demyelinating Diseases

Perineuronal Oligodendroglia

Cerebral Autoimmune Demyelinating Diseases