Solitary needle like crystals made of calcium oxalate are called

Options :
  1. Druses
  2. Sphaerites
  3. Styloids
  4. Raphides

Answer and Explanation :-

Answer: Option 3


When the calcium oxalate crystals are united into a star like formation, they form druse and sphaerite. Elongated needle like crystals of calcium oxalate are called styloid and raphide. The styloids are solitary needles whereas the raphides are aggregates of such crystals.

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