Class 7 Exam > Class 7 Questions > What will happen when diaphragm relaxes and c...
Start Learning for Free
What will happen when diaphragm relaxes and curves upwards?
- a)Air is forced out of the lungs.
- b)The rib cage goes up and outward.
- c)The volume of the thoracic cavity increases.
- d)Air pressure inside the thoracic cavity decreases.
Correct answer is option 'A'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
What will happen when diaphragm relaxes and curves upwards?a)Air is fo...
When structure P (diaphragm) relaxes and curve upwards air is forced out of the lungs.
Most Upvoted Answer
What will happen when diaphragm relaxes and curves upwards?a)Air is fo...
When the diagram curves upwards, it helps in pushing out the air in our lungs. So, the correct answer is option A.
Free Test
FREE
| Start Free Test |
Community Answer
What will happen when diaphragm relaxes and curves upwards?a)Air is fo...
When the diaphragm relaxes and curves upwards, several changes occur in the respiratory system. The correct answer to this question is option 'A': Air is forced out of the lungs. Let's discuss the reasons behind this answer in detail.
What is the diaphragm?
The diaphragm is a dome-shaped muscle located at the bottom of the chest cavity. It plays a crucial role in the process of breathing. When it contracts and moves downwards, it increases the volume of the thoracic cavity, allowing air to enter the lungs. Conversely, when it relaxes and moves upwards, it decreases the volume of the thoracic cavity, leading to the expulsion of air from the lungs.
Explanation of the answer:
When the diaphragm relaxes and curves upwards, the following changes occur:
1. The volume of the thoracic cavity decreases: The relaxation of the diaphragm causes it to move upwards, reducing the space available in the chest cavity.
2. Air pressure inside the thoracic cavity increases: As the volume of the thoracic cavity decreases, the air pressure inside it increases. This increased pressure pushes against the lungs.
3. Air is forced out of the lungs: Due to the increased pressure inside the thoracic cavity, the air is forced out of the lungs. This process is known as expiration or exhalation.
4. The rib cage goes down and inward: The movement of the diaphragm also affects the position of the rib cage. When the diaphragm relaxes, it moves upwards, causing the rib cage to move down and inward.
Therefore, when the diaphragm relaxes and curves upwards, it reduces the volume of the thoracic cavity, increases the air pressure inside the thoracic cavity, and forces the air out of the lungs. This is why the correct answer is option 'A': Air is forced out of the lungs.
What is the diaphragm?
The diaphragm is a dome-shaped muscle located at the bottom of the chest cavity. It plays a crucial role in the process of breathing. When it contracts and moves downwards, it increases the volume of the thoracic cavity, allowing air to enter the lungs. Conversely, when it relaxes and moves upwards, it decreases the volume of the thoracic cavity, leading to the expulsion of air from the lungs.
Explanation of the answer:
When the diaphragm relaxes and curves upwards, the following changes occur:
1. The volume of the thoracic cavity decreases: The relaxation of the diaphragm causes it to move upwards, reducing the space available in the chest cavity.
2. Air pressure inside the thoracic cavity increases: As the volume of the thoracic cavity decreases, the air pressure inside it increases. This increased pressure pushes against the lungs.
3. Air is forced out of the lungs: Due to the increased pressure inside the thoracic cavity, the air is forced out of the lungs. This process is known as expiration or exhalation.
4. The rib cage goes down and inward: The movement of the diaphragm also affects the position of the rib cage. When the diaphragm relaxes, it moves upwards, causing the rib cage to move down and inward.
Therefore, when the diaphragm relaxes and curves upwards, it reduces the volume of the thoracic cavity, increases the air pressure inside the thoracic cavity, and forces the air out of the lungs. This is why the correct answer is option 'A': Air is forced out of the lungs.
Attention Class 7 Students!
To make sure you are not studying endlessly, EduRev has designed Class 7 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 7.
|
Explore Courses for Class 7 exam
|
|
Similar Class 7 Doubts
Top Courses for Class 7View all
What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer?
Question Description
What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer?.
What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? for Class 7 2024 is part of Class 7 preparation. The Question and answers have been prepared according to the Class 7 exam syllabus. Information about What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Class 7 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer?.
Solutions for What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 7.
Download more important topics, notes, lectures and mock test series for Class 7 Exam by signing up for free.
Here you can find the meaning of What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer?, a detailed solution for What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? has been provided alongside types of What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice What will happen when diaphragm relaxes and curves upwards?a)Air is forced out of the lungs.b)The rib cage goes up and outward.c)The volume of the thoracic cavity increases.d)Air pressure inside the thoracic cavity decreases.Correct answer is option 'A'. Can you explain this answer? tests, examples and also practice Class 7 tests.
|
|
Explore Courses for Class 7 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup