Question at position 3 The occipital condyles are oval projections that:Are located between the occipital and parietal bonesForm part of the orbit of the eyeForm the floor of the cranial cavityAllow passage for the carotid arteryArticulate with the atlas (C1 vertebra)

Question

Question at position 3 The occipital condyles are oval projections that:Are located between the occipital and parietal bonesForm part of the orbit of the eyeForm the floor of the cranial cavityAllow passage for the carotid arteryArticulate with the atlas (C1 vertebra)

BlackTom AI · Accepted Answer

Question at position 3 concerns the function of the occipital condyles and what they articulate with.
Option 1: 'Are located between the occipital and parietal bones' — This is incorrect. The occipital condyles are features of the occipital bone at the skull base, not a joint or structure located between the occipital and parietal bones.
Option 2: 'Form part of the orbit of the eye' — This is false. The orbital margins are formed by several bones (frontal, zygomatic, maxilla, sphenoid, ethmoid, lacrimal, ethmoid), not by the occipital condyles.
Option 3: 'Form the floor of the cranial cavity' — This is not accurate. While the occipital bone contributes to the posterior cranial fossa, the floor of the cranial cavity is formed by multiple bones (including the sphenoid, temporal, ethmoid, and other parts), and the occipital condyles themselves are not described as forming the floor.
Option 4: 'Allow passage for the carotid artery' — This is incorrect. The carotid canal in the temporal bone transmits the internal carotid artery, not the occipital condyles.
Option 5: 'Articulate with the atlas (C1 vertebra)' — This is correct. The occipital condyles are rounded projections on the occipital bone that articulate with the superior articular facets of the first cervical vertebra (atlas), forming the atlanto-occipital joints which permit nodding movements of the head.

Question at position 3 The occipital condyles are oval projections that:Are located between the occipital and parietal bonesForm part of the orbit of the eyeForm the floor of the cranial cavityAllow passage for the carotid arteryArticulate with the atlas (C1 vertebra)单项选择题

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