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Lungs
Pulmonary Tuberculosis
Caused by Mycobacterium Tuberculosis.
Symptoms ­ persistent cough, chest pains, tiredness, loss of appetite, weight loss, coughing up blood,
wasting away, death.
Transmitted by aerosol droplets from infected's coughs + sneezes.
How it works
1.) Bacteria breathed in. Invade epithelial cells of the alveoli and bronchioles.
2.)…

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2.) Results in growth of fibrous scar tissue around alveoli.
3.) Scar tissue reduces alveoli elasticity + compresses them, reducing air flow + gas exchange.
Extra information ­
Pulmonary fibrosis is known as an occupational disease because the causes are generally found in work
environments. Some of the following are…

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Myocardial Infarction (Heart Attack)
Definition ­ refers to a reduced supply of oxygen to the cardiac muscle. Results from a blockage in the
coronary arteries.
Where the blockage is ­
1.) If the blockage occurs close to the junction of the coronary artery and aorta the heart stops beating as…

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