A 58 yo man is brought to the ED by police after being found staggering in the streets. Rectal temp is 101.8, pulse is 110, resp is 20 and BP is 110/72. He smells of wine. Coughing produces thick, red, blood sputum. Physical exam shows dullness to percussion, increased vocal fremitus, decreased breath sounds and wet crackles of the right lung. CXR shows consolidation of the right upper lob. 1. What is the most likely causal organism and why? 2. What sort of organism is it?

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).