Preview of practice Mechanism Of Breathing (14.3) - Respiratory System - ICSE 9 Biology
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Mechanism of Breathing

Practice - Mechanism of Breathing

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Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What happens to the diaphragm during inhalation?

💡 Hint: Think about how the diaphragm's movement changes the chest size.

Question 2 Easy

What happens to air pressure in the lungs during exhalation?

💡 Hint: Consider what occurs as the chest cavity decreases.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What happens to the diaphragm during inhalation?

It relaxes
It contracts
It stays still

💡 Hint: Consider what the diaphragm's action needs to be to bring in air.

Question 2

True or False: Exhalation decreases lung pressure.

True
False

💡 Hint: Think about what occurs when the chest cavity gets smaller.

3 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a scenario where a person is having difficulty inhaling, identify possible reasons and describe how the diaphragm may be functioning.

💡 Hint: Consider what could inhibit the diaphragm's function.

Challenge 2 Hard

Illustrate how the mechanics of breathing can be affected in high altitudes.

💡 Hint: Think about how pressure differences affect breathing in various environments.

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Reference links

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