10. Why is a countercurrent exchange system a good one to use for exchanging material between an organism's blood and the external environment? A) Because this type of system has the 2 materials flowing in the same direction so that there is always a concentration gradient B) Because this type of system is the only way to obtain sufficient oxygen when using air as a respiratory medium C) Because this type of system is less efficient because it can move a large amount of material with very little energy. D) None of the above E) Because this type of system has the two materials flowing in opposite directions so that there is always a concentration gradient.

10. Why is a countercurrent exchange system a good one to use for exchanging material between an organism's blood and the external environment? A) Because this type of system has the 2 materials flowing in the same direction so that there is always a concentration gradient B) Because this type of system is the only way to obtain sufficient oxygen when using air as a respiratory medium C) Because this type of system is less efficient because it can move a large amount of material with very little energy. D) None of the above E) Because this type of system has the two materials flowing in opposite directions so that there is always a concentration gradient.

Biomedical Instrumentation Systems

1st Edition

ISBN:9781133478294

Author:Chatterjee

Publisher:Chatterjee

Chapter11: Instrumentation In Respiration

Section: Chapter Questions

Problem 7Q

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The ability of hemoglobin to deliver oxygen is enhanced because: A) The partial pressure of oxygen is lower in most tissues than it is in the lungs OB) The metabolic activity in most tissues lowers the pH of the blood C) The metabolic activity of tissues increases carbon dioxide levels D) All of the above E) b and c only
Choose the factors that favor LOADING of oxygen onto hemoglobin. a) higher PO b) higher pH c) lower PCO d) lower BPG e) all of the above
1. Considering a patient with severe pneumonia, resulting in impaired exchange of O2 and CO2 between the air and blood in the lungs? Would the oxygen (O2) levels in the blood be: (a) Normal (b) below normal (c) elevated 2. With respect to item #1, would the CO2 levels in the same patient’s blood be ? (a) Normal (b) below normal (c) elevated 3. With respect to item #1 and 2, assuming that other compensatory measures have not yet had time to act, what would happen to the patient’s blood considering thatCO2 reacts with water to form carbonic acid? (a) have a normal pH (b) be too acidic (c) not be acidic enough (that is, be too alkaline)
21. A 20% increase in which of the following would be most effective in achieving the greatest increase in oxygen content of pulmonary capillary blood in a perfectly homogeneous lung inhaling air at sea level? A) Cardiac output B) Hemoglobin concentration C) Hemoglobin P50 D) Inspired O2 concentration E) Ventilation Please explain the reasoning for each choice. I understand that other choices says its D but please tell me why it's not the other.
which of the following influences the bonding of oxygen to to hemoglobin? a) pH b) oxygen concentration c) temperature d) all of the above
a build up in fluids in the lung will result in a reduced amount of oxygen in the blood returning to the heart from the lungs because A) the bronchioles have dilated B) there is less hemoglobin in the blood C) the surface area for external respiration has been reduced D) the permeability of the lung capillaries has been increased
Which of the following statements are TRUE: Very low oxygen levels will cause: a) Myoglobin instead of hemeglobin will be used to transfer oxygen to cells b) You might experience feelings similar to sickle-cell anemia c) You might have a higher total concentration of hemeglobin to help transport enough oxygen. d) Oxygen will be more concentrated in the air, resulting in higher saturation of hemeglobin
80. A 20% increase in which of the following would be most effective in achieving the greatest increase in oxygen content of pulmonary capillary blood in a perfectly homogeneous lung inhaling air at sea level? OA) Cardiac output OB) Hemoglobin concentration O c) Hemoglobin P50 OD) Inspired O₂ concentration O E) Ventilation
Which of the links below are true? a) The cysteine moieties in the beta globulin - nitric oxide transport b) The globe component in hemoglobin - carbon dioxide transport c) The home group in the hemoglobin - oxygen transport d) Carbonic anhydrase - carbon dioxide transport
1. What is the role of carbonic anhydrase in red blood cells at the tissue site? 2. Write the correct term that correlates with each the following symbols Hb = HbO2 = HbCO2 H+ O2 H2CO3 HHb HCO3 3. Using the symbols above and any others you may need, draw an illustration that shows the flow of O2 from lungs to tissue and CO2 from tissue to lungs.
3) An increased Pco2 leads to a(n): A) increased respiratory rate B) decreased respiratory rate C) no change in respiratory rate
With the Bohr effect, more oxygen is released because a(n)____. a) increase in pH(alkalosis) strengthens the hemoglobin-oxygen bond b) increase in pH(alkalosis) weakens the hemoglobin-oxygen bond c) decrease in pH (acidosis) weakens the hemoglobin-oxygen bond d) decrease in pH (acidosis) strengthens the hemoglobin-oxygen bond