Name a bone type that forms the human brain case.
Use the six distinct names forming the standard eight cranial bones. Left and right parietal or temporal bones share one answer; facial bones and ear ossicles are excluded.
The brain case has eight bones but six distinct names: paired temporal and parietal bones plus frontal, occipital, sphenoid and ethmoid. Facial bones belong to a different group.
Reveal all 6 checked answers and scores
Points are editorial tiers. The source supports membership in the set, not how many people know an answer.
- Frontal 25 · Familiar
- The frontal bone forms the forehead and part of the brain case.
Also accepted: Frontal bone
- Temporal 50 · Less common
- The left and right temporal bones count under one name.
Also accepted: Temporal bone · Temporal bones
- Parietal 50 · Less common
- The left and right parietal bones form much of the upper sides of the brain case.
Also accepted: Parietal bone · Parietal bones
- Occipital 75 · Uncommon
- The occipital forms the back and posterior base of the brain case.
Also accepted: Occipital bone
- Sphenoid 100 · Rare
- The sphenoid forms much of the central skull base.
Also accepted: Sphenoid bone
- Ethmoid 100 · Rare
- The ethmoid is one of the six distinct names in the cranial-bone list.
Also accepted: Ethmoid bone
Checked exclusions
- Mandible: The mandible is a facial bone, not one of the brain-case bones.
- Maxilla: The maxilla is a facial bone, not one of the brain-case bones.
Sources for this question
- Anatomy and Physiology 2e: 7.2 The Skull
Eight brain-case bones reduced to six distinct names; facial bones described separately.
OpenStax, Rice University · Checked 2026-11-04
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