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•Select the correct description of the left lung:

1.Narrower than the right lung with 3 lobes

2.Narrower than the right lung with 2 lobes

3.Wider than the right lung with 2 lobes

4.Shorter than the right lung with 3 lobes

Answer 1

Lungs in human body are pair of organs helps in respiration. Lungs helps in exchange of gases, and is situated int he thoracic cavity of the chest. The lungs are protected by ribs and the pleura is covering layers of the lungs. Parietal pleura is the outer covering layer of the lung and visceral pleura is the inner lining of the lungs. Pleural cavity is the space between parietal and visceral pleura it contains 5-10 ml of pleural fluid that helps to prevent friction. Right lungs have three lobes and it is wider and shorter as it is sharing space with liver. Left lung is narrower and consists of two lobes and shares its space with heart.The lobes are further divided in to bronchopulmonary segments,bronchi,bronchioles and alveoli.The correct option is : 2) Narrower than the right lung with 2 lobes. The left lung shares its space with heart inside the thoracic cavity.