Ventral posteromedial nucleus

Ventral posteromedial nucleus
Thalamic nuclei
Details
Identifiers
Latinnucleus ventralis posteromedialis thalami
NeuroNames347
NeuroLex IDbirnlex_743
TA98A14.1.08.642
TA25693
FMA62202
Anatomical terms of neuroanatomy

The ventral posteromedial nucleus (VPM) is a nucleus of the thalamus and serves an analogous somatosensory relay role for the ascending trigeminothalamic tracts as its lateral neighbour the ventral posterolateral nucleus serves for dorsal column–medial lemniscus pathway 2nd-order neurons.

Inputs and outputs

The VPM contains synapses between second and third order neurons from the anterior (ventral) trigeminothalamic tract and posterior (dorsal) trigeminothalamic tract. These neurons convey sensory information from the face and oral cavity. Third order neurons in the trigeminothalamic systems project to the postcentral gyrus.

The VPM also receives taste afferent information from the solitary tract and projects to the cortical gustatory area.

Subareas

VPMpc

The parvicellular part of the ventroposterior medial nucleus (VPMpc) is argued by some as not an actually part of the VPM, because it does not project to the somatosensory cortex as the remainder of the VPM does, and therefore should be called the ventromedial nucleus (VMb) instead.

Sources

  • Kiernan, J., & Rajakumar, R. (2013). Barr's the human nervous system: an anatomical viewpoint. Lippincott Williams & Wilkins.



This page was last updated at 2024-01-09 19:18 UTC. Update now. View original page.

All our content comes from Wikipedia and under the Creative Commons Attribution-ShareAlike License.


Top

If mathematical, chemical, physical and other formulas are not displayed correctly on this page, please useFirefox or Safari