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Breathing and Thorax Functions

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Questions and Answers

What is the primary function of the thorax in relation to breathing?

To protect the lungs from damage

To act as a conduit for structures between the abdomen and neck

To provide movement for air into and out of the lungs (correct)

To house and protect the heart

What is the main role of the diaphragm in breathing?

To expand the thoracic cavity (correct)

To protect the heart and lungs

To contract the thoracic cavity

To move air into and out of the lungs

Which organs are protected by the thorax?

The lungs and liver

The kidneys and esophagus

The stomach and spleen

The heart, lungs, and great vessels (correct)

What is the shape of the diaphragm?

Upward domed (B) Signup and view all the answers

Which organs lie under the right dome of the diaphragm?

The liver (B) Signup and view all the answers

What is the function of the mediastinum?

To act as a conduit for structures between body regions (A) Signup and view all the answers

Which structures pass through the mediastinum?

The esophagus, vagus nerves, and thoracic duct (C) Signup and view all the answers

What is the origin of the phrenic nerves?

The neck (D) Signup and view all the answers

Where do the posterior aspects of the superior poles of the kidneys lie?

On the diaphragm, anterior to ribs XI and XII on the right, and to ribs XI and XII on the left (D) Signup and view all the answers

What is one of the key elements in breathing?

Up and down movements of the diaphragm (B) Signup and view all the answers

Which abdominal viscera are protected by the thoracic wall?

Stomach, spleen, and liver (A) Signup and view all the answers

What is the purpose of the ribs in breathing?

To change the lateral and anterior dimensions of the thoracic wall (C) Signup and view all the answers

What passes through the mediastinum from the abdomen to the neck?

Esophagus, vagus nerves, and thoracic duct (A) Signup and view all the answers

What is the purpose of the thorax with respect to vital organs?

To house and protect vital organs (C) Signup and view all the answers