Forcible Entry No. 3 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 20 3.  There are many diseases that can affect the respiratory system.  Diseases can disrupt the circulation of the blood from picking up ______ and dropping off ______. Choices: Oxygen/carbon dioxide Alveoli/hydrocarbon Oxygen/carbon oxide Oxygen/neumocarbons