Substantia nigra
System
Nervous
SNOMED CT
279286002
Substantia nigra
Definition
Predominantly gray matter midbrain structure lying dorsal to the crus cerebri and ventral to the midbrain tegmentum. It is divided into a dorsal, cellularly compact region known as the pars compacta and a more ventrally located, containing more loosely packed cells, the pars reticulata. The most lateral region of the reticulata is identified as the pars lateralis (MM).
Also known as nucleus of basis pedunculi, Soemmering's substance — per UBERON
The Substantia nigra is a part of the Nervous.