part of part of capable of part of capable of part of defecation penile erection micturition substantia innominata magnocellular nucleus of stria terminalis A component of the nuclei of stria terminalis defined on the basis of topology, connectivity and multiple stains in the rat. It is one of nine components of the anterior nuclei of stria terminalis in the Functional CNS Model- Rat ( Swanson-2004 ). EMAPA:37666 BAMS:MA magnocellular nucleus MBA:521 neuronames:3220 UBERON:0007627 MA:0000928 the magnocellular nucleus projects to virtually all known major parts of the brain network that controls pelvic functions, including micturition, defecation, and penile erection, as well as to brain networks controlling nutrient and body water homeostasis. This and other evidence suggests that the magnocellular nucleus is part of a corticostriatopallidal differentiation modulating and coordinating pelvic functions with the maintenance of nutrient and body water homeostasis[PMID:16304682] telencephalic nucleus anterior division of bed nuclei of stria terminalis