The five unpaired bones of the skull are the frontal, occipital, sphenoid, ethmoid, and vomer bones.
Here's a breakdown:
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Frontal Bone: Forms the forehead and the upper part of the eye sockets.
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Occipital Bone: Forms the back and base of the skull. It contains the foramen magnum, the large opening through which the spinal cord connects to the brain.
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Sphenoid Bone: A complex, butterfly-shaped bone located in the middle of the skull. It articulates with all other cranial bones and contributes to the base of the skull, eye sockets, and nasal cavity.
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Ethmoid Bone: Located in the anterior part of the skull, between the eye sockets. It contributes to the nasal cavity and eye sockets.
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Vomer Bone: A thin, flat bone located in the midline of the nasal cavity. It forms the inferior part of the nasal septum.