BIO 322: Exam 3-Questions with Correct Answers/ Verified/ Latest Update
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Bio 322
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Bio 322
Why will a decrease in respiratory rate change plasma pH?
C. It increases plasma PCO2, and therefore decreases plasma pH.
D. The decreased respiratory rate invokes the respiratory reflex mediated by the
Pneumotaxic center.
B. It increases plasma PO2, indirectly removing acid from the blood, thu...
BIO 322: Exam 3 -Questions with Cor rect Answers/ Verified/ Latest Update Why will a decrease in respiratory rate change plasma pH? C. It increases plasma PCO2, and therefore decreases plasma pH. D. The decreased respiratory rate invokes the respiratory reflex mediated by the Pneumotaxic cent er. B. It increases plasma PO2, indirectly removing acid from the blood, thus lowering pH. A. It decreases plasma PCO2, which decreases H2CO3 production in red blood cells. This essentially means that less H+ are produced, raising plasma pH. - ✔✔C. It incr eases plasma PCO2, and therefore decreases plasma pH. Which statement is accurate? C. It increases plasma PCO2, and therefore decreases plasma pH. D. The decreased respiratory rate invokes the respiratory reflex mediated by the Pneumotaxic center. B. It i ncreases plasma PO2, indirectly removing acid from the blood, thus lowering pH. A. It decreases plasma PCO2, which decreases H2CO3 production in red blood cells. This essentially means that less H+ are produced, raising plasma pH. - ✔✔C. It increases plasm a PCO2, and therefore decreases plasma pH. A typical respiratory minute volume, at rest might be 7.5 L/min 75 L/min 75L 7.5 mL/min - ✔✔7.5 L/min You learned two new terms, ventilation and respiration, of the respiratory system. What do they mean? C. Ventilation is moving air into and out of the conducting portions of the airways. Respiration refers to movement of gas from the alveoli into the pulmonary capillary. D. Ventilation is the movement of gas from the alveoli into the pulmonary capillary. Respiration refers to movement of gas from the systemic capillary into the interstitial fluid. A. Ventilation refers to blood movement and perfusion means gas movement. B. Ventilation is moving air into and out of the conducting portions of the airways. Respiration refers to movement of gas from the conducting portion of the respiratory tract into the alveoli. - ✔✔C. Ventilation is moving air into and out of the conducting portions of the airways. Respiration refers to movement of gas from the alveoli into t he pulmonary capillary. Click on the chemical symbol that causes pH to decrease while holding your breath. - ✔✔CO2 What is pneumonia? B. An infection that results in fluid in the alveoli which inhibits gas exchange. This can result in hypoxia, hypercapni a, and a respiratory acidosis. C. Pneumonia is an infection that results in fluid in the alveoli and reduced gas exchange. This can result in hyperemia and a respiratory alkalosis acidosis since CO2 can't be eliminated efficiently. D. Pneumonia is an infec tion that puts the lungs under water, effectively drowning patients in the most severe cases. A. A life threatening condition that is usually associated with an alkalosis because CO2 canâ t be efficiently eliminated. - ✔✔B. An infection that results in flu id in the alveoli which inhibits gas exchange. This can result in hypoxia, hypercapnia, and a respiratory acidosis. How does the respiratory system contribute to blood pressure regulation? Angriotensin converting enzyme is produced in endothelial cells in lung capillaries, and it helps to regulate blood pressure. ACE is continuously produced in the lungs and it helps to regulate blood pressure by lowering blood pressure. ACE is continuously produced in the lungs and it helps to regulate blood pressure by c ausing vasodilation. ACE is produced in the lungs and it has a direct effect on blood vessels causing vaso -
constriction. It therefore increases PR and increases blood pressure - ✔✔Angriotensin converting enzyme is produced in endothelial cells in lung capi llaries, and it helps to regulate blood pressure. What is true about pulmonary hypertension? Pulmonary hypertension occurs when pulmonary blood pressure is elevated, resulting in excess filtration by pulmonary capillaries. Excess fluid on the alveolar sur face inhibits O2 absorption. Pulmonary hypertension occurs when pulmonary blood pressure is elevated above 120/80 mmHg. This increases filtration by pulmonary capillaries. Excess fluid on the alveolar surface inhibits O2 absorption. Pulmonary hypertension is elevated pulmonary blood pressure. This results in increased ACE secretion which will help to return blood pressure to normal levels. All of these answers are true. - ✔✔Pulmonary hypertension occurs when pulmonary blood pressure i s elevated, resulting in excess filtration by pulmonary capillaries. Excess fluid on the alveolar surface inhibits O2 absorption. What is true about compliance? D. People with asthma have LOW compliance and therefore have trouble during inhalation. C. Com pliance is the same as elasticity. Increased elasticity equals increased compliance. B. Patients with emphysema have lowered compliance and therefore the lungs are easier to expand. A. Compliance describes expandability of the lungs. The greater the compli ance the easier it is to fill the lungs. A younger person probably has greater compliance compared to an older person. - ✔✔A. Compliance describes expandability of the lungs. The greater the compliance the easier it is to fill the lungs. A younger person p robably has greater compliance compared to an older person. Will COPD lead to respiratory alkalosis or acidosis, and why? Respiratory acidosis because the lungs will not be ventilated adequately. This means the plasma CO2 will rise, leading to acidosis. Respiratory acidosis because the lungs will not be ventilated adequately. This means the plasma O2 will drop, leading to acidosis. Respiratory acidosis alkalosis the lungs will not be ventilated adequately. This means the plasma CO2 will rise, leading to al kalosis. Maybe neither. COPD is restricted airways and the patient has troubel breathing. The major issue is inadequate O2 and that doesn't affect plasma pH. - ✔✔Respiratory acidosis because the lungs will not be ventilated adequately. This means the plasm a CO2 will rise, leading to acidosis.
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