Which of the following statements is true regarding respiratory gas exchange:
A. A higher PCO2 in the tissues promotes CO2 movement to a lower PCO2 in oxygenated blood
B. A lower PO2 in oxygenated blood promotes movement of O2 from the blood to the tissues
C. A higher PO2 in deoxynated blood promotes movement of oxygen from the lungs to the blood
D. A higher PCO2 in oxygenated blood promotes movement of CO2 from the tissues to the blood
Answer: A. A higher PCO2 in the tissues promotes CO2 movement to a lower PCO2 in oxygenated blood
Explanation:
Note that pCO2 (partial pressure of carbon dioxide) reflects the the amount of carbon dioxide gas dissolved in the blood.
This means that if the partial pressure of carbon dioxide is lower in the oxygenated blood which is what happens when blood is sent to the lungs, it makes it easier for the dissolved oxygen within the blood to move into tissues because a gas easily moves from an area where its partial pressure is high to an area where its partial pressure is low.
You might also like to view...
Describe what happens to a patient's drugs when the patient is discharged from the hospital to another healthcare facility, such as a nursing home
What will be an ideal response?
A client has visited the health care provider following several days of nausea/vomiting and abdominal pain. The provider thinks the client may have Helicobacter pylori (H. pylori) infection
As part of the education provided, the client should be informed that which of the following complications can occur if this infection is not eradicated? Select all that apply. A) GI bleeding due to peptic ulcer formation B) Failure to thrive due to malabsorption C) Pyloric stenosis due to inability to empty the stomach D) Gastric cancer due to metaplasia changes in the cells
A peculiar paroxysmal cough ending in a "crowing" or "whooping" sound, also called whooping cough, is called ________
Fill in the blank(s) with correct word
The expression a - b is the same as ____.
A. a - (-b) B. a + (-b) C. -a + b D. -a - b