HUBS1406 Respiratory practice quiz & Correct Answers

The partial pressure of carbon dioxide in the interstitial fluid around working cells and in venous blood is normally: - ANS 45 mmHg The volume of air moved into the lungs during a single, quiet inspiration is: - ANS the tidal volume Expiration at rest depends on two factors. Which of the choices below lists those two factors? - ANS The recoil of elastic fibres that were stretched during inspiration and the inward pull of surface tension due to the film of alveolar fluid Which of the following is true regarding the smooth muscle of the bronchioles? - ANS Its contraction increases airway resistance If you go from a low to a high altitude, your haematocrit will increase. This is because: - ANS the concentration of oxygen and total atmospheric pressure is lower at high altitudes Damage to the type II alveolar cells would result in: - ANS a loss of surfactant. increased surface tension in the alveoli A and C correct awnser is both If a person were to undergo respiratory testing while they were having an asthma attack, which of the following would be most likely to be abnormal? - ANS The volume or air expired in 1 second and the rate of expiration The respiratory membrane is a combination of - ANS alveolar and capillary walls and their fused basement membranes The condition causing collapse of alveoli in premature newborns is known as: - ANS respiratory distress syndrome. N