10 Questions
What happens to the volume of the thoracic cavity when the inspiratory muscles relax?
Decreases
According to Boyle’s law, what happens to the pressure within the lungs when lung volume decreases?
Increases
During passive expiration, why does air move out of the lungs?
Due to pressure gradient
Which muscles are primarily used during expiration when airway resistance is increased?
Internal intercostal muscles
Which muscle compresses the abdominal cavity and helps push air out of the lungs?
Abdominal muscles
What is the primary function of extrinsic muscles related to respiration?
Movement of the pectoral girdle and/or arm
Which muscle pulls the ribs downward and inward during expiration?
Internal intercostal muscles
What happens to the lung-chest wall system after inspiration?
It returns to its resting position
What do extrinsic muscles have one attachment to?
Thoracic cage
Which muscle helps in movement of the rib cage for respiration?
Subclavius
Explore the anatomy and function of the thoracic muscles, which are crucial for maintaining the stability of the thoracic wall and aiding in respiration. Learn about the intrinsic and extrinsic muscles attached to the thoracic cage.
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