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Inspiration occurs when there is ___________
- a)No pressure gradient
- b)Positive pressure in the lungs
- c)Negative pressure in the lungs
- d)More pressure in lungs than atmosphere
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
Inspiration occurs when there is ___________a)No pressure gradientb)Po...
Explanation:
Negative pressure in the lungs:
- Inspiration occurs when there is negative pressure in the lungs.
- When we inhale, the diaphragm and intercostal muscles contract, causing the thoracic cavity to expand.
- This expansion decreases the pressure within the lungs, creating a negative pressure compared to the atmosphere.
- As a result, air rushes into the lungs to equalize the pressure.
No pressure gradient:
- If there is no pressure gradient between the lungs and the atmosphere, there would be no movement of air into the lungs.
- Inspiration relies on the presence of a pressure difference to facilitate the flow of air.
Positive pressure in the lungs:
- If there is positive pressure in the lungs, it would prevent air from entering the respiratory system.
- Positive pressure can be seen in conditions like mechanical ventilation, where air is forced into the lungs under pressure.
More pressure in lungs than atmosphere:
- If there is more pressure in the lungs than in the atmosphere, air would not flow into the lungs during inspiration.
- The pressure gradient must always favor air movement from high pressure (atmosphere) to low pressure (lungs) for inspiration to occur.
Negative pressure in the lungs:
- Inspiration occurs when there is negative pressure in the lungs.
- When we inhale, the diaphragm and intercostal muscles contract, causing the thoracic cavity to expand.
- This expansion decreases the pressure within the lungs, creating a negative pressure compared to the atmosphere.
- As a result, air rushes into the lungs to equalize the pressure.
No pressure gradient:
- If there is no pressure gradient between the lungs and the atmosphere, there would be no movement of air into the lungs.
- Inspiration relies on the presence of a pressure difference to facilitate the flow of air.
Positive pressure in the lungs:
- If there is positive pressure in the lungs, it would prevent air from entering the respiratory system.
- Positive pressure can be seen in conditions like mechanical ventilation, where air is forced into the lungs under pressure.
More pressure in lungs than atmosphere:
- If there is more pressure in the lungs than in the atmosphere, air would not flow into the lungs during inspiration.
- The pressure gradient must always favor air movement from high pressure (atmosphere) to low pressure (lungs) for inspiration to occur.
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Community Answer
Inspiration occurs when there is ___________a)No pressure gradientb)Po...
Inspiration can occur if the pressure within the lungs is less than the atmospheric pressure.
So, there is a negative pressure in the lungs than the atmospheric pressure.
So, there is a negative pressure in the lungs than the atmospheric pressure.
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Inspiration occurs when there is ___________a)No pressure gradientb)Positive pressure in the lungsc)Negative pressure in the lungsd)More pressure in lungs than atmosphereCorrect answer is option 'C'. Can you explain this answer?
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