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a. 25. Which of the following can stimulate the peripheral chemoreceptors? a. Hypoperfusion b. Increased temperature c. Nicotine i a only ii. a, b, and iii. band conly iv. bonly 26. According to Boyle's Law, when volume increases, pressure will to develop in the thorax, 27. When the diaphragm contracts, this causes then draws air into the lungs, Positive pressure b. Negative pressure c. No change in pressure 28. Which substance in the alveoli is responsible for lowering the surface tensie a. Mucus b. Saline 1. Surfactant a. Water 29. High airway resistance will the time constant. a. Increase b. Decrease c. No Effect 30. A patient's lungs are difficult to distend. This indicates a. Increased b) Decreased c. Normal