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The process of inhaling is accomplished in part by
- a)relaxation of the diaphragm
- b)contraction of the rib muscles
- c)a decrease in the volume of the thoracic cavity
- d)an increase in the pressure of the thoracic cavity
Correct answer is option 'B'. Can you explain this answer?
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The process of inhaling is accomplished in part bya)relaxation of the ...
Yes when we inhale our external intercostal muscle and phrenic muscle contract thus the volume increases and pressure decreases so B, is cr8.
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The process of inhaling is accomplished in part bya)relaxation of the ...
- **Contraction of the rib muscles**
When we inhale, the rib muscles, specifically the external intercostal muscles, contract. This contraction causes the ribcage to move up and out, increasing the space in the thoracic cavity. By expanding the thoracic cavity, the lungs are able to expand as well and take in more air.
- **Role of the diaphragm**
While the relaxation of the diaphragm does play a role in the process of exhaling, during inhalation, the diaphragm actually contracts rather than relaxes. When the diaphragm contracts, it moves downward, further increasing the volume of the thoracic cavity. This downward movement creates a vacuum effect in the lungs, causing air to rush in to equalize the pressure.
- **Volume and pressure changes**
The decrease in pressure within the thoracic cavity due to the expansion of the ribcage and the downward movement of the diaphragm causes air to flow into the lungs. This decrease in pressure is essential for inhalation to occur effectively. As the volume of the thoracic cavity increases, the pressure inside the lungs decreases, allowing air from the environment to flow in and fill the space.
In conclusion, the primary mechanism by which inhalation is accomplished is through the contraction of the rib muscles, specifically the external intercostal muscles, which expand the thoracic cavity and create a pressure gradient that allows air to flow into the lungs.
When we inhale, the rib muscles, specifically the external intercostal muscles, contract. This contraction causes the ribcage to move up and out, increasing the space in the thoracic cavity. By expanding the thoracic cavity, the lungs are able to expand as well and take in more air.
- **Role of the diaphragm**
While the relaxation of the diaphragm does play a role in the process of exhaling, during inhalation, the diaphragm actually contracts rather than relaxes. When the diaphragm contracts, it moves downward, further increasing the volume of the thoracic cavity. This downward movement creates a vacuum effect in the lungs, causing air to rush in to equalize the pressure.
- **Volume and pressure changes**
The decrease in pressure within the thoracic cavity due to the expansion of the ribcage and the downward movement of the diaphragm causes air to flow into the lungs. This decrease in pressure is essential for inhalation to occur effectively. As the volume of the thoracic cavity increases, the pressure inside the lungs decreases, allowing air from the environment to flow in and fill the space.
In conclusion, the primary mechanism by which inhalation is accomplished is through the contraction of the rib muscles, specifically the external intercostal muscles, which expand the thoracic cavity and create a pressure gradient that allows air to flow into the lungs.
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The process of inhaling is accomplished in part bya)relaxation of the diaphragmb)contraction of the rib musclesc)a decrease in the volume of the thoracic cavityd)an increase in the pressure of the thoracic cavityCorrect answer is option 'B'. Can you explain this answer?
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The process of inhaling is accomplished in part bya)relaxation of the diaphragmb)contraction of the rib musclesc)a decrease in the volume of the thoracic cavityd)an increase in the pressure of the thoracic cavityCorrect answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The process of inhaling is accomplished in part bya)relaxation of the diaphragmb)contraction of the rib musclesc)a decrease in the volume of the thoracic cavityd)an increase in the pressure of the thoracic cavityCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The process of inhaling is accomplished in part bya)relaxation of the diaphragmb)contraction of the rib musclesc)a decrease in the volume of the thoracic cavityd)an increase in the pressure of the thoracic cavityCorrect answer is option 'B'. Can you explain this answer?.
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