The PO2 of tissue cells is greater than the PO2 of arteriolar blood, the PO2 of

Question

The PO2 of tissue cells is greater than the PO2 of arteriolar blood, the PO2 of avelolar air is less than the PO2 of the blood in pulmonary arterioles:

a. both statements are true

b. both statements are false

c. the first statement is true, the second is false

d. the first statement is false, the second is true

IF a patient's blood Ph is measured at 7.53 you would expect his rate of respiration to

a. remain the same as long as he forms urine at an increased rate

b. slow down

c. speed up

d. slow down, then speed up as his heart rate increases

60. You would expect the partial pressure of oxygen to the highest in the a. In the atmosphere b. In the pulmonary arteries c. In the pulmonary veins d. In the hepatic portal vein e. In the intracellular fluid 61. If several small alveoli merge to form one single, larger air space, the result would be a. I b. I ncrease rate of gas exchange due to an increased volume of air within the alveolus ncreased rate of gas exchange due to increased partial pressure of oxygen and decreased partial pressure of carbon dioxide within the alveolus Decreased rate of gas exchange due to an increase in the thickness of the respiratory membrane d. c. Decreased rate of gas exchange due to a decrease in surface area 62. If there were an obstruction in the renal artery, one might expect: A decrease in glomerular filtration rate (GFR) a. b. A decrease in the release of rennin c. An increase in the glomerular filtration rate (GFR) an increase in the glomerular filtration rate (GFR) and an increase in the release of rennin Both a decrease in the glomerular filtration rate (GFR) and an increase in the release of renin e. 63. The material that results from glomerular filtration contains a. Everything that is in blood b. Everything that is in blood, except blood cells and most proteins c. Water and electrolytes only d. Water and wastes only e. Only water 64. The structure that transports urine from the bladder to the outside of the body is the a. ureter b. nephrorn c. urethra d. peritubular offramp 65. In compensating for respiratory alkalosis, the body excretes more a Ammonium ions b. Bicarbonate ions Dihydrogen phosphate ions d. Hydrogen ions e. 66. When the bicarbonate ion diffuses out of the red blood cells into plasma, it is usually exchanged with which anion? a. Sodium b. Potassium c. Phosphate d. Chloride

Explanation / Answer

1. Both statements are true because -

a) PO2 is alveoli is 104 mmHg vs 40 mmHg for deoxygenated blood of the pulmonary artery and PCO2 in alveoli is at 40 mmHg vs 45 mmHg in blood returning from tissues. So gas goes from blood to alveolar air in this case.

b) Is PO2 in tissues is low relative to arterial blood then O2 moves in tissues, CO2 moves out of tissues, into blood.

2. The gradual increase in blood Ph level of blood decrease in respiratory rate.

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