Medullary laminae of thalamus
Encyclopedia
Medullary laminae of thalamus are layers of myelin
ated fibres that appear on cross sections of the thalamus
. They also are commonly referred to as laminae medullares thalami or medullary layers of thalamus. The specific layers are:
Myelin
Myelin is a dielectric material that forms a layer, the myelin sheath, usually around only the axon of a neuron. It is essential for the proper functioning of the nervous system. Myelin is an outgrowth of a type of glial cell. The production of the myelin sheath is called myelination...
ated fibres that appear on cross sections of the thalamus
Thalamus
The thalamus is a midline paired symmetrical structure within the brains of vertebrates, including humans. It is situated between the cerebral cortex and midbrain, both in terms of location and neurological connections...
. They also are commonly referred to as laminae medullares thalami or medullary layers of thalamus. The specific layers are:
- Lamina medullaris lateralis (external medullary lamina) - separates ventral and lateral thalamusThalamusThe thalamus is a midline paired symmetrical structure within the brains of vertebrates, including humans. It is situated between the cerebral cortex and midbrain, both in terms of location and neurological connections...
from the subthalamusSubthalamusThe subthalamus is a part of the diencephalon. Its major part is the subthalamic nucleus. Functionally, it also encompasses the globus pallidus, which is topographically part of the telencephalon.-Anatomy:...
and thalamic reticular nucleus - Lamina medullaris medialis (internal medullary lamina) - positioned between the dorsomedial and ventral nuclei of thalamus, encloses the intralaminar nuclei (centromedian nucleusCentromedian nucleusIn the anatomy of the brain, the centromedian nucleus, also known as the centrum medianum, is a part of the intralaminar nucleus of the thalamus...
, paracentral, and central lateral)