middle frontal sulcus

mid·dle fron·tal sul·cus

a relatively shallow sagittal fissure of the brain dividing the middle frontal convolution into an upper and lower part; this sulcus is found only in humans and anthropoid apes; at its anterior extremity it bifurcates, the two branches spreading out laterally and constituting the frontomarginal sulcus.
Farlex Partner Medical Dictionary © Farlex 2012
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