Answers Lab10 RespPhysiology - 1763 Words

M37_MARI0000_00_SE_CH37.qxd 3/29/11 2:34 PM Page 237 R E V I E W S H E E T NAME ____________________________________ EXERCISE LAB TIME/DATE _______________________ 37 Respiratory System Physiology Mechanics of Respiration 1. For each of the following cases, check the column appropriate to your observations on the operation of the model lung. Diaphragm pushed up Change Increased Decreased âÅ"“ âÅ"“ âÅ"“ âÅ"“ In the size of the balloons (lungs) In direction of air flow Increased âÅ"“ In internal volume of the bell jar (thoracic cage) In internal pressure Decreased Diaphragm pulled down Into lungs Out of lungs âÅ"“ âÅ"“ Into lungs âÅ"“ Out of lungs 2. Base your answers to the following on your observations in question 1. Under what†¦show more content†¦11. Which respiratory ailments can respiratory volume tests be used to detect? Chronic bronchitis and emphysema (often associated). Chronic bronchitis ↓ the volume of air that can be inhaled due to excessive mucus production; emphysema ↓ the amount of air that can be exhaled (check-valve effect). 12. Using an appropriate reference, complete the chart below. O2 CO2 N2 Inspired ~21% ~0.04% ~78% Expired ~16% ~4% ~78% % of composition of air Factors Influencing Rate and Depth of Respiration 13. Where are the neural control centers of respiratory rhythm? medulla oblongata and pons For questions 14–21, use your Activity 6 data (the pneumograph-physiograph recording or visual count). 14. In your data, what was the rate of quiet breathing? Initial testing (student data) breaths/min Record observations of how the initial pneumograph recording was modified during the various testing procedures described below. Indicate the respiratory rate, and include comments on the relative depth of the respiratory peaks observed. Test performed Observations Talking Respiratory rate becomes irregular during talking. Yawning Yawning is reflected by extremely deep prolonged inspiration. Laughing Respiratory rate becomes irregular. Respiratory depth may be ↑ or ↓ depending on the nature of the laugh. Standing Concentrating Regular rhythm and