General Anatomy · Skeletal System · Medium
Mastoid
Meaning: The bony prominence behind the ear, filled with air cells, part of the temporal bone.
In practice: Swelling and tenderness over the mastoid after an ear infection suggested mastoiditis.
Quick check
Two questions on related general anatomy words.
Which word means: The thin smooth inner lining of the heart chambers and valves.
Answer: Endocardium
Which word means: A very large bone marrow cell that breaks into fragments to produce platelets.
Answer: Megakaryocyte
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