Which of the following statements about human respiration is correct?

Practice question

Question

Which of the following statements about human respiration is correct?

Options

Choose one · Correct answer highlighted

The trachea divides into two primary bronchi at the 5th thoracic vertebra. Correct The alveoli are lined with a thick muscular layer to prevent collapse. Lungs are covered by a single pleural membrane. The diaphragm remains fixed during breathing movements.

Explanation

The trachea divides into right and left primary bronchi at the level of the 5th thoracic vertebra, making this statement correct.

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