has soma location has soma location pyramidal neuron primary motor cortex pyramidal cell 2014-10-06T17:39:04Z https://cellxgene.cziscience.com/cellguide/CL_2000049 http://www.ncbi.nlm.nih.gov/pubmed/12524689 Primary motor cortex pyramidal cells (PMCPs) are a specific type of neuron found predominantly in the primary motor cortex of the brain, which holds a vital role in controlling voluntary movements. These cells are characterized by their distinct pyramidal - triangularly - shaped cell bodies, large size, and long branching dendrites that facilitate extensive interneuronal connectivity. PMCPs, along with other cortical pyramidal cells, are excitatory neurons, meaning they carry electrical impulses away from the cell body, facilitating communication between different areas of the brain and the spinal cord. The principal function of PMCPs revolves around motor control. PMCPs in the primary motor cortex are responsible for mapping and planning complex movements, from the intention to move to the actual execution. For example, Betz cells are a type of PMCPs that extend their long axons, collectively known as the Corticospinal Tract (CST), which descends from the cortex to the spinal cord, synapsing with neurons in the spinal cord that control muscles throughout the body. This information transmission allows PMCPs to control precise, skillful, and independent movements of both proximal and distal muscles. Aside from controlling voluntary movement, PMCPs contribute to motor learning and adaptation by establishing new neuronal connections and strengthening existing ones. Studies using techniques like optogenetics and two-photon imaging have revealed that PMCPs undergo significant synaptic plasticity during motor learning, indicating their role in modifying motor outputs in response to training and experience. Overall, PMCPs provide a biochemical and anatomic basis for translating thoughts into actions, an essential process for the organism's interaction with the environment. (This extended description was generated by ChatGPT and reviewed by the CellGuide team, who added references, and by the CL editors, who approved it for inclusion in CL. It may contain information that applies only to some subtypes and species, and so should not be considered definitional.) Any pyramidal cell that is part of a primary motor cortex. CL:2000049 cerebral cortex pyramidal neuron primary motor cortex