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Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYBreathing and Exchange of Gases1 Mark
MCQ
Trachea divides into bronchi at:
  • A
    $4^{th}$ thoracic vertebra.
  • ✓
    $5^{th}$ thoracic vertebra.
  • C
    $6^{th}$ thoracic vertebra.
  • D
    $7^{th}$ thoracic vertebra.
✓

Answer

Correct option: B.
$5^{th}$ thoracic vertebra.
Trachea is a straight tube extending up to the mid$-$thoracic cavity. It divides into bronchi at $5^{th}$ thoracic vertebra.

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