Class 11 Exam  >  Class 11 Questions  >  When you hold your breath, which of the follo... Start Learning for Free
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
  • a)
    rising CO2 and falling O2 concentration
  • b)
    falling O2 concentration
  • c)
    rising CO2 concentration
  • d)
    falling CO2 concentration
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
When you hold your breath, which of the following gas changes in blood...

The correct answer is C: Rising CO2 concentration.
When you hold your breath, the levels of gases in your blood start to change. The urge to breathe is triggered by the buildup of carbon dioxide (CO2) in your blood. Here's how it happens:
1. Oxygen (O2) supply: When you hold your breath, the oxygen concentration in your blood starts to decrease because you are not taking in fresh oxygen from the air.
2. Carbon dioxide production: As your body continues to function, it produces carbon dioxide as a waste product. This CO2 is transported in your blood.
3. CO2 buildup: As you hold your breath, the production of CO2 continues, but there is no fresh oxygen to remove it. This leads to a gradual buildup of CO2 in your blood.
4. Rising CO2 concentration triggers the urge to breathe: The increase in CO2 is detected by chemoreceptors in your brain, specifically in the medulla oblongata. These chemoreceptors are sensitive to changes in CO2 levels, and when the concentration becomes too high, they send signals to your respiratory muscles, telling them to contract and initiate breathing.
Therefore, it is the rising CO2 concentration in your blood that first leads to the urge to breathe when you hold your breath.
Attention Class 11 Students!
To make sure you are not studying endlessly, EduRev has designed Class 11 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 11.
Explore Courses for Class 11 exam

Top Courses for Class 11

When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer?
Question Description
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer?.
Solutions for When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 11. Download more important topics, notes, lectures and mock test series for Class 11 Exam by signing up for free.
Here you can find the meaning of When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?a)rising CO2 and falling O2 concentrationb)falling O2 concentrationc)rising CO2 concentrationd)falling CO2 concentrationCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 11 tests.
Explore Courses for Class 11 exam

Top Courses for Class 11

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev