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Respiratory System, Physiology. Questions with answers. Graded A+. latest update.

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Respiratory System, Physiology. Questions with answers. Graded A+. latest update. what are the three overall functions of respiration - ✔✔-movement of gases, gas exchange, transport of gase... s breathing is also referred to as - ✔✔-pulmonary ventilation Boyle's Law states that gas pressure in a closed container is ________ proportional to the volume of a container - ✔✔-inversely air flows from an area of __________ pressure to an area of _________ pressure - ✔✔-higher; lower atmospheric pressure at sea level is - ✔✔-760 mm Hg intrapleural pressure is ______________ than atmospheric pressure resulting in a ____________ pressure pulling against the lungs - ✔✔-lower; negative the negative pressure in the pleural layers helps to keep the lungs - ✔✔-expanded intrapulmonary pressure is the pressure - ✔✔-inside the lungs inspiration / inhalation involves which muscles contracting - ✔✔-diaphragm and intercostal muscles on inspiration, the volume of the thoracic cavity and lungs - ✔✔-increases on expiration, the volume of the thoracic cavity and lungs - ✔✔-decreases forced expiration involves the use of which "extra" muscles - ✔✔-abdominal a cough or big exhalation is referred to as - ✔✔-forced exhalation contraction / shrinking of the bronchioles by muscular contraction is regulated by the - ✔✔- parasympathetic NS opening of the bronchioles by muscular relaxation is regulated by the - ✔✔-sympathetic NS surface tension in the alveoli tends to _________ expansion - ✔✔-oppose what substance is made by alveolar cells in order to reduce surface tension - ✔✔-pulmonary surfactant pulmonary surfactant is made up of - ✔✔-phospholipids and proteins tidal volume is defined as - ✔✔-volume of air in or out of lungs at rest average tidal volume = - ✔✔-500 ml (at rest) normal respiratory rate is (breaths / min) - ✔✔-12 breaths / min minute respiratory volume formula = - ✔✔-MRV = TV x RR (TV = tidal vol; RR = respiratory rate) inspiratory reserve volume is defined as - ✔✔-air that can be inspired [Show More]

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