Asked by Michelle Joyal on Sep 25, 2024
Verified
Which of the following is not true of respiratory alkalosis?
A) It exists when the blood pH is >7.45.
B) It can result from an increase in the CO₂ level in the blood.
C) It can result in death, if the blood pH reaches 8.0 or above.
D) It causes vasoconstriction of the cerebral blood vessels, which decreases oxygen delivery to the brain.
E) All of these are true of respiratory alkalosis.
Respiratory Alkalosis
A condition characterized by a decrease in the carbon dioxide level in the blood, often due to rapid or deep breathing, leading to a pH imbalance where the blood becomes too alkaline.
Blood Ph
The measure of the acidity or alkalinity of the blood, typically maintained within a tight range around a neutral pH of 7.4.
CO₂
Carbon dioxide, a colorless gas produced by burning carbon and organic compounds and by respiration. It is absorbed by plants in photosynthesis.
- Comprehend the physiological reactions and underlying mechanisms to respiratory acidosis and alkalosis.
Verified Answer
AM
Abhya Mehraabout 15 hours ago
Final Answer :
B
Explanation :
Respiratory alkalosis occurs when there is a decrease in the partial pressure of carbon dioxide in the blood, leading to an increase in blood pH. Thus, choice B is not true as it describes an increase rather than a decrease in CO₂ levels that would cause respiratory alkalosis. The other options (A, C, and D) are all true of respiratory alkalosis.
Learning Objectives
- Comprehend the physiological reactions and underlying mechanisms to respiratory acidosis and alkalosis.