QUESTION 7 Laryngeal braking a. occurs at the onset of inspiration cb.increases the work of respiration Cc. increases the resistance to airflow od. decreases PO2 from 160 to 105 ce. is the basis of cardiopulmonary resuscitation QUESTION 8 What is the PO2 at high altitude if the Barometric Pressure is 500 mm Hg? ca. 160 mm Hg cb. 105 mm Hg Cc. 23.8 mm Hg Cd. 180 mm Hg Ce. 160 ml/min QUESTION 9 What accounts for the decrease in PO from alveoli to artery? ca. anatomical dead space b. diffusion of gas from higher to lower partial pressures Oc. ventilation perfusion inequalities od.diffusion of gas from lower to higher partial pressures Ce. none of the above QUESTION 10 Which of the following would occur to decrease the energy, or work, required for respiration ca, increase airway resistance prior to inspiration b. pulmonary surfactant cc. decrease airway resistance prior to expiration d. B & C ce. All of the above