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Questions and Answers
What happens when the intercostal muscles between the ribs contract during inhalation?
What happens when the intercostal muscles between the ribs contract during inhalation?
- Ribs remain stationary
- Ribs are pulled upwards and outwards (correct)
- Ribs move in a circular motion
- Ribs are pushed downwards and inwards
What is the role of the diaphragm during exhalation?
What is the role of the diaphragm during exhalation?
- Relaxes and moves back to its normal position (correct)
- Contracts and moves downwards
- Expands and pushes upwards
- Remains immobile
What happens to the volume inside the chest cavity during inhalation?
What happens to the volume inside the chest cavity during inhalation?
- Remains constant
- Decreases
- Increases (correct)
- Fluctuates irregularly
What causes the pressure inside the chest cavity to decrease during inhalation?
What causes the pressure inside the chest cavity to decrease during inhalation?
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How is air expelled from the lungs during exhalation?
How is air expelled from the lungs during exhalation?
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