The area in lungs where blood vessels and airways pass in and out is called
Correct answer: B. Hilum
- A. Pelvis
- B. Hilum
- C. Mediastinum
- D. Fissure
Explanation
The hilum of the lung is found on the medial aspect of each lung, and it is the only site of entrance or exit of structures associated with the lungs. That is to say, both lungs have a region called the hilum, which serves as the point of attachment between the lung root and the lung.
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The human respiratory system conducts air to the alveoli, where oxygen and carbon dioxide exchange occurs across thin respiratory surfaces. Questions cover the nasal passage, trachea, bronchi, lungs, diaphragm and intercostal muscles, ventilation mechanics and gas transport, while distinguishing breathing and gaseous exchange from cellular respiration.
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