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16 Questions

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Thorax Anatomy

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Questions and Answers

What is the shape of the thorax?

Ellipsoid

Sphere

Irregularly shaped cylinder (correct)

Regularly shaped cylinder

What closes the inferior thoracic aperture?

The diaphragm (correct)

The muscles

The sternum

The ribs

How many major compartments are there in the thoracic cavity?

Five

Four

Two

Three (correct)

What is the orientation of the mediastinum in the thoracic cavity?

Longitudinal Signup and view all the answers

What is the significance of the pleural cavities extending above the level of rib I?

The apex of each lung extends into the root of the neck Signup and view all the answers

Why can the mediastinum be entered surgically without opening the pleural cavities?

Because the pleural cavities are completely separated from each other Signup and view all the answers

What is the main function of the diaphragm in the thorax?

To close the inferior thoracic aperture Signup and view all the answers

What is the relationship between the pleural cavities?

They are completely separated from each other Signup and view all the answers

Which structure is NOT part of the musculoskeletal wall of the thorax?

Diaphragm Signup and view all the answers

What is the position of the apex of each lung?

Above the level of rib I Signup and view all the answers

What is the orientation of the thoracic cavity?

Irregularly shaped cylinder Signup and view all the answers

What is contained within the mediastinum?

Heart, esophagus, trachea, major nerves, and major systemic blood vessels Signup and view all the answers

Why are abnormal events in one pleural cavity unlikely to affect the other cavity?

Because the mediastinum separates the pleural cavities Signup and view all the answers

What is the shape of the superior thoracic aperture?

Narrow opening Signup and view all the answers

What is the function of the musculoskeletal wall of the thorax?

To provide flexibility to the thorax Signup and view all the answers

What is the significance of the mediastinum?

It allows surgical entry without opening the pleural cavities Signup and view all the answers