Question

Which of the following statements is incorrect regarding respiratory system?
a. Each terminal bronchiole give rise to a network of bronchi.
b. the alveoli are highly vascularised.
c. The lungs are covered by a double-layered membrane.
d. The plecral fluid reduces friction on the lung surface.

Answer 1

'Each terminal bronchiole give rise to a network of bronchi'. - This is the incorrect statement.

Option: A

Explanation:

• Human lungs (both right and left lungs) are covered by double layered pleural membranes. The layers with pleural fluid helps to reduce friction on the surface of the lung.
• The secondary and tertiary bronchi give rise to thin and terminal structures called bronchioles. The terminal bronchioles give rise to number of vascular bag structures called alveoli.
• Usually, the alveoli are highly vascularized. This alveoli has very thin walls. This network comprises of bronchi, bronchioles, and alveoli form the lungs.

To know more about human respiratory system,

1) Describe human respiratory system in points

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2) Short note on human respiratory system.

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