The lungs are a pair of organs in the thoracic chest which are very important for the survival of the human being.
They fill a large part of the chest cavity. The rest is filled by the heart and the mediastinum which separate the right from the left lung.
The left lung is narrower, longer and smaller than the right and has 2 lobes while the right lung has 3 lobes. The 2 primary bronchi enter each lung through the hilum together with the pulmonary blood vessels. The lower surface of the lungs rests on the diaphragm.
What are the functions of the lungs?
Within the lung are millions of alveoli the air sacs which receive the air and oxygen breathed into the lungs. Together with alveolar ducts and the bronchioles, the alveoli allow the easy exchange of gases between the surrounding blood capillaries and the air. Oxygen from the air is carried in the blood from the lungs to the cells and carbon dioxide from the cells to the lungs.
The lungs are therefore an important pair of organs. In fact it is believed that the lungs disease or failure can kill faster than heart disease so important is the oxygen in the lungs to the body cells.
What are Lung Diseases?
Lung diseases can be divided into:
1. lung infections such as pneumonia, tuberculosis, influenza, legionnaire’s disease
2. obstructive diseases of the lungs such as cystic fibrosis, pneumoconiosis, fibrosing alveolitis
3. lung cancer and tumors
4. bronchial asthma, bronchitis, bronchiolitis
5. Pleural diseases of the lung including pleurisy. Pleural effusion, pneumothorax
6. Pulmonary hypertension and embolism
TABLE OF CONTENT
Chapter 1 The Lungs
Chapter 2 Cystic Fibrosis
Chapter 3 Chronic Obstructive Lung Disease
Chapter 4 Bronchial asthma
Chapter 5 Bronchitis
Chapter 6 Tuberculosis
Chapter 7 Pneumonia
Chapter 8 Legionnaire’s Disease
Chapter 9 Pleural Effusion
Chapter 10 Pneumothorax
Chapter 11 Lung Cancer
Chapter 12 Pulmonary Embolism