A 68 year old man who is employee at a nursing home comts to GP because of a cough that is product of thick, reddish sputum and cehst pain for past 3 days. He has a 1 week history of pharyngitis that has slowly resolved. His temperature is 39, pulse is 115, respirations are 25 and BP is 140/90. 1. What is likely diagnosis and why? 2. What are features of the causative organism?

The main function of the respiratory system is gas exchange (O2 and CO2). Ventilation is the movement of air through the respiratory tract into (inspiration) and out of (expiration) the respiratory zone (lungs).