Abdulqader Ahmedover 2 years ago
During inspiration, what's the muscles that acting to expand the chest wall?
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During normal inspiration the outer intercostal muscles and diaphragm help stiffen the chestwall and also produce the pressure which draws air into the lungs. During a forced inspiration i.e. when u actively try to suck in as much air as possible, you also use the accessory respiration musculature which includes the sternocledomastoideum, pectoralis major, trapezoideus and internal intercostal musculature
over 2 years ago
It's the amazing answer But the lower part of the answer don't understand it The internal intercostal is helps with the expiration and the trapezius muscle don't have any relation with respiration. Thanks for u