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How many parathyroid glands are present in humans?

ATwo
BFour
CSix
DOne
Answer & Solution
Correct answer: B. Four
1. The parathyroid glands lie on the back side of the thyroid gland. 2. There is one pair in each of the two lobes of the thyroid. 3. Two pairs makes four glands in total. 4. Their position explains why they are at risk during thyroid surgery. _Source: syllabus Biology Ch19 'Chemical Coordination and Integration', section 19.2.5_
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