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WAEC Biology 2018 Question 9

Question 9

Support and Movement

The odontoid process is found on the

  1. A.axis vertebra.
  2. B.atlas vertebra.
  3. C.thoracic vertebra.
  4. D.sacral vertebra.
Show the answer and explanation

Answer: A (axis vertebra.)

Explanation

The axis (second neck vertebra) has a peg, the odontoid process, that fits into the atlas and lets the head turn from side to side.