Pyramidal cell

Pyramidal cell
A human neocortical pyramidal cell stained via Golgi's method. The apical dendrite extends vertically above the soma (cell body) and the numerous basal dendrites radiate laterally from the base of the cell body.
Details
LocationCerebral cortex esp. layers III and V
ShapeMultipolar pyramidal
FunctionExcitatory projection neuron
NeurotransmitterGlutamate, GABA
Identifiers
MeSHD017966
NeuroLex IDsao862606388
THH1.00.01.0.00044
FMA84105
Anatomical terms of neuroanatomy

Pyramidal cells, or pyramidal neurons, are a type of multipolar neuron found in areas of the brain including the cerebral cortex, the hippocampus, and the amygdala. Pyramidal cells are the primary excitation units of the mammalian prefrontal cortex and the corticospinal tract. One of the main structural features of the pyramidal neuron is the conic shaped soma, or cell body, after which the neuron is named. Other key structural features of the pyramidal cell are a single axon, a large apical dendrite, multiple basal dendrites, and the presence of dendritic spines.[1]

Pyramidal neurons are also one of two cell types where the characteristic sign, Negri bodies, are found in post-mortem rabies infection.[2] Pyramidal neurons were first discovered and studied by Santiago Ramón y Cajal.[3][4] Since then, studies on pyramidal neurons have focused on topics ranging from neuroplasticity to cognition.

  1. ^ Megías M, Emri Z, Freund TF, Gulyás AI (2001). "Total number and distribution of inhibitory and excitatory synapses on hippocampal CA1 pyramidal cells". Neuroscience. 102 (3): 527–540. doi:10.1016/S0306-4522(00)00496-6. PMID 11226691. S2CID 16458290.
  2. ^ Sketchy Group, LLC. "2.3 rhabdovirus". SketchyMedical. Archived from the original on 2017-04-13.
  3. ^ Elston GN (November 2003). "Cortex, cognition and the cell: new insights into the pyramidal neuron and prefrontal function". Cerebral Cortex. 13 (11): 1124–1138. doi:10.1093/cercor/bhg093. PMID 14576205.
  4. ^ García-López P, García-Marín V, Freire M (November 2006). "Three-dimensional reconstruction and quantitative study of a pyramidal cell of a Cajal histological preparation". The Journal of Neuroscience. 26 (44): 11249–11252. doi:10.1523/JNEUROSCI.3543-06.2006. PMC 6674523. PMID 17079652.

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