The lung surface and the thoracic wall will move in and out together, rather tha
ID: 101654 • Letter: T
Question
The lung surface and the thoracic wall will move in and out together, rather than separately, during ventilation due to a. Diaphragm b. Inhalatory/inspiratory intercostals muscles c. Exhalatory/expiratory intercostal muscles d. Intrapleural fluid e. Alveoli Which of the following statements regarding the transport of CO_2 in blood is true? a. Some of the CO_2 in blood is dissolved in plasma b. Some of the CO_2 in blood is bound to hemoglobin c. Most of the CO_2 in blood is converted to bicarbonate d. All of the above is true Which of the following would be the cause of respiratory alkalosis? a. An increase in alveolar ventilation during mild exercise b. Hyperventilation c. An increase in plasma HCO_3^- d. An increase in arterial CO_2 The kidneys respond to hypoventilation by a. Increasing their secretion of H^+ and increasing their reabsorption of HCO_3^- b. Increasing their secretion of H^+ and decreasing their reabsorption of HCO_3^- c. Decreasing their secretion of H^+ and decreasing their reabsorption of HCO_3^- d. The kidneys do not compensate for changes in ventilation What change in renal regulation of H^+ would help compensate for a metabolic acidosis? a. a decrease in the filtered load of H^+ b. an increase in the production of new plasma HCO_3^- c. a decrease in the tubular production of ammonia d. a decrease in the amount of H^+ secreted in the proximal tubule In one of the labs, when you breathed into a pink solution, it turned yellow after some time. Why happen? a. Because the starch in the solution is breaking down and reacting with the indicator b. Because CO_2 in your exhaled breath turns into bicarbonate c. Because you're lacking oxygen from breathing out so much d. Because CO_2 in your exhaled breath turns into carbonic acid Which of the following molecules crosses the luminal membrane of intestinal cells by a. Hydrogen ion b. Bicarbonate c. Amino Acids d. PotassiumExplanation / Answer
7. The correct opton is OPTION D - Intrapleural fluid.
Pleural effusion, sometimes referred to as “water on the lungs,” is the build-up of excess fluid between the layers of the pleura outside the lungs. The pleura are thin membranes that line the lungs and the inside of the chest cavity and act to lubricate and facilitate breathing.
8. All Options are correct. Therefore correct option is OPTION D.
Carbon dioxide is transported in the blood from the tissue to the lungs in three ways:1 (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin. Approximately 75% of carbon dioxide is transport in the red blood cell and 25% in the plasma.
9. Correct option is Option B - Hyperventilation.
When a person hyperventilates, there are lower than normal levels of PCO2 and hydrogen ion in arterial blood, a
condition called respiratory alkalosis.
10. Correct option is Option B-
Hypoventilation is a medical emergency in which decreased ventilation (hypoventilation) increases the concentration of carbon dioxide in the blood and decreases the blood's pH
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