Wehrman's CH 6 Exam questions and answers

Without humidity, our airways get irritated and mucus gets thick and nasty. The actual amount, or weight, of water vapor in a gas is called absolute humidity As respiratory therapists, we compare the weight of water vapor to the amount it could hold if the gas was fully saturated. This ratio of content to capacity is known as _________ humidity. relative You hear about this on the weather report every day. I'm more interested in how much vapor gas can hold inside the airways. This amount is called percent _____humidity. body When inspired gas has less than 100% of its capacity, a humidity ______exists. deficit, Humidifiers are used to make up the difference. When you get a can of icy soda on a hot day, water droplets begin to form on the outside of the can. That's because the air around the can is cooling (everyone knows cold air does not hold as much water vapor as warm air). When air cools, and gaseous water returns to a liquid form, we say that____________ has occurred condensation The opposite effect occurs when the drink sits out. Water molecules escape from the liquid into the air. This process is called ____________and adds to the humidity in the air. evaporation Heat moves in mysterious ways—four of them, to be precise. Newborn babies are especially sensitive to heat loss. Keeping a preemie warm can make the difference between life and death! When babies are born, we dry them off to prevent loss through ___________________________. evaporation Then the little one is wrapped in cloth to prevent ___________________________, or loss that occurs when you are touching a cooler object. conduction Finally, we put the tyke in an incubator. The incubator provides warmth in two ways. First, a special light ____heat toward the baby. radiates Second, warm air blows into the incubator. Transfer of heat through movement of fluids (or gas) is called ___________________________. convection A registered pulmonary function technologist (RPFT) is performing lung testing on a patient. The patient inhales 1.5 L from the spirometer 1. What will happen to the volume of gas inside the patient's lungs? 2. What is the gas law? 1. The volume of gas will expand. 2. Charles' law A home care respiratory therapist places an oxygen cylinder in the van so that she can take it to a client's house. The sun is shining through the window on the cylinder. 3. What will happen to the pressure inside the cylinder as it gets warmer? 4. What is the gas law? 3. Pressure will increase in the cylinder. 4. Guy-Lussac law When you start to inhale, your diaphragm drops and your chest expands. In other words, you increase the size, or volume, of your chest. 5. What happens to the pressure inside your chest? 6. What is the gas law? 5. Decreases 6. Boyle's law Place a dry, empty glass soda bottle in the freezer for at least 15 minutes. Take the bottle out and immediately cover the mouth of the bottle with a balloon. Wait a few minutes and watch! 7. What happened to the balloon? 8. What gas law is responsible for the result? 7. The balloon inflates or expands. 8. Charles' law