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<p>in the posterior frontal lobe. The <a href="page.php?w=Soma_%28biology%29">cell bodies</a> of Betz cell <a href="page.php?w=neuron">neuron</a>s are the largest in the brain, approaching nearly 0.1 mm in <a href="page.php?w=diameter">diameter</a>. The axons of the upper motor neurons project out of the precentral gyrus travelling through to the brainstem, where they will decussate (intersect) within the lower <a href="page.php?w=medulla_oblongata">medulla oblongata</a> to form the lateral <a href="page.php?w=corticospinal_tract">corticospinal tract</a></p><p>
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