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Reference.org
Orbital part of frontal bone
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<p>The orbital or horizontal part of the <a href="/facts/Frontal_bone/4dsgSej6">frontal bone</a> (<i>pars orbitalis</i>) consists of two thin triangular plates, the orbital plates, which form the vaults of the orbits, and are separated from one another by a median gap, the <a href="/facts/Ethmoidal_notch/JxhnAW9B">ethmoidal notch</a>. </p>