has characteristic has synaptic IO in region primary motor cortex pyramidal cell L5 extratelencephalic projecting glutamatergic cortical neuron medulla-projecting glutamatergic neuron of the primary motor cortex MY ET MOp MY ET M1 MY ET glut MOp medulla-projecting extratelencephalic-projecting glutamatergic neuron of the primary motor cortex An extratelencephalic-projecting glutamatergic neuron located in layer 5b of the primary motor cortex that projects to the medulla. MY ET cells are large, big-tufted cells with the apical dendrite often bifurcating close to the soma, suggesting they are corticospinal cells. MY ET cells have bigger hyperpolarization sag, lower input resistance, and smaller AP width, compared to L5 IT neurons. corticomedulla projecting medulla oblongata