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What is bucket handle mechanism? Describe with proper diagram.

What is bucket handle mechanism? Describe with proper diagram.

Grade:11

1 Answers

Arun
25750 Points
6 years ago
One of the most important functions of ribs and diaphragm is the change in volume of thorax that helps inspiration and expiration. In general, the ribs move around two axes. As the anterior end of ribs is about 4 cm lower than the posterior end, the middle part of rib is lower than anterior and posterior ends. Movement at costovertebral joints 7 to 10 about an anteroposterior axis results in raising and lowering the middle of the rib, the Bucket-handle movement. In elevation, this increases the transverse diameter of the thorax.

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