What is the role of the diaphragm in breathing?
Worksheet 3.2.1 Human respiratory system

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Biology
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
The diaphragm contracts and moves downward during inhalation, and relaxes and moves upward during exhalation.
2.
FLASHCARD QUESTION
Front
What is the main advantage of alveoli in the respiratory system?
Back
Alveoli provide a large surface area for more oxygen to diffuse into the blood.
3.
FLASHCARD QUESTION
Front
Which organ is a part of the respiratory system?
Back
Lungs.
4.
FLASHCARD QUESTION
Front
What is the function of intercostal muscles?
Back
Intercostal muscles assist in breathing by expanding and contracting the rib cage.
5.
FLASHCARD QUESTION
Front
What is the name of the region where the nose and mouth are connected?
Back
Pharynx.
6.
FLASHCARD QUESTION
Front
What is the primary function of the respiratory system?
Back
To facilitate gas exchange, allowing oxygen to enter the body and carbon dioxide to be expelled.
7.
FLASHCARD QUESTION
Front
What is the process of inhalation?
Back
Inhalation is the process of taking air into the lungs, involving the contraction of the diaphragm and intercostal muscles.
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