BILD 26 Lecture Notes - Lecture 9: Lung Volumes, Thoracic Cavity, Bild
Document Summary
Tidal volume: amt of air inspired/expired during normal, relaxed breathing b. irv additional air you can forcibly breathe in after normal inspiration c. erv additional air you can forcibly breathe out after normal expiration d. residual volume the volume of air that remains in the lungs after erv is exhaled. With each o2 that binds, hb changes shape to increase affinity for oxygen (needs high affinity to bind o2 but cannot be too high that it can"t unbind o2 as necessary) b. co2 circulated in the blood as h2co3 (carbonic acid) i. co2 + h2o h2co3 h+ + hco3- Secretions into the duodenum a. hco3 (bicarbonate) neutralize acidity of gastric juices b. zymogens released when cck is secreted in small intestines c. bile emulsifies fat for absorption d. cck digestion of protein, causes bile release from gallbladder, decrease stomach motility, targets hypothalamus to decreases appetite e. secretin regulates ph, inhibits hcl secretion, stimulates hco3 production.
