How is carbon dioxide transported in the blood? {Ans: As dissolved carbon dioxide, attached to hemoglobin, becomes bicarbonate}What are the levels of branching? {Ans: Trachea, bronchi, bronchioles, alveoli}Lung Volumes {Ans: The amount of air exchanged from a single event during ventilation (measure by a spirometer)}What occurs with the diaphragm during inspiration and expiration? {Ans: The diaphragm is the main muscle of inspiration. When the diaphragm contracts (inspiration), the chest expands. Upon expiration, the chest cavity decreases and pressure inside increases.}Be familiar with the disease pathology, clinical presentation, diagnosis, and treatment of ARDS. {Ans: 1. pathology - due to pathologic lung changes the lungs stiffen and breathing becomes difficult 2. clinical presentation - rapid onset of respiratory distress (12-15 hours after trigger event) - increase respiratory rate, signs of respiratory failure - hypoxemia occurs and with multiple organ failure. 3. diagnosis - chest x ray shows lung "white out" from fluid with normal cardiac function. 4. treatment - o2 and ventilator support}Forced Expiratory Volume (FEV) {Ans: measures volume of air that can be quickly and forcefully exhaled following full inspiration (to total lung capacity)}