Human physiology wiz needed d. osmosis 21. Which of the following correctly desc

Question

Human physiology wiz needed

d. osmosis 21. Which of the following correctly describes mechanisms of CO2 transport? a, 20% of CO2 is carried dissolved directly into the plasma. b. 7-8% of CO2 is carried in the form of carbamino hemoglobin c. Carbonic anhydrase is responsible for bonding CO2 to hemoglobin. d. The Pco2o arterial blood is the main determinant o respiratory rate and depth e. None of these is correct 22. Select the most correct statement a. Major chemical receptors are located in all areas of the body b. The main driving force of respiration is changing levels of Po2 c. Increasing H levels stimulate central chemoreceptors. d. Increas e in COz concentration causes the pH of the cerebrospinal fluid to increase thereby stimulating respiratory drive e. None of these is correct. 23. Chemical stimuli which increase respiration include: 1. high Pco2 2. low Pco 3. low [H'] 4. high [H] 5. low pH a. 1,4 & 5 b.1&3 c. 1 & 4 d. 2 and 4 e. 2 and 3 24 The strongest stimulus for increased respiration is: a. decrease in alveolar Po2 b. decrease in arterial Po2 c. increase in alveolar Pco2 d. decrease in arterial Pco2 e. increase in arterial Pco2

Explanation / Answer

21. Answer is C.

PCo2 determines the speed and depth of an individual.

Carbonic anhydrase is responsible for CO2 to dissolve in water.about 75% is transported via RBC and 25% through plasma. Carbamino hemoglobin amounts for 25% of CO2 release in lungs.

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