Chapter 1: Basic Cardiovascular System Quiz
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Questions and Answers

The thoracic cage is formed by which of the following structures?

  • Sternum anteriorly, 7 cervical vertebrae posteriorly, and 12 pairs of ribs and costal cartilages on each side
  • Clavicle anteriorly, 5 lumbar vertebrae posteriorly, and 10 pairs of ribs and costal cartilages on each side
  • Sternum anteriorly, 12 thoracic vertebrae and intervertebral discs posteriorly, and 12 pairs of ribs and costal cartilages on each side (correct)
  • Scapula anteriorly, 12 thoracic vertebrae and intervertebral discs posteriorly, and 10 pairs of ribs and costal cartilages on each side

Which blood vessels supply the thoracic cage?

  • Coronary arteries from the aortic sinus and pulmonary veins from the pulmonary circulation
  • Pulmonary arteries from the pulmonary trunk and azygos veins from the superior vena cava
  • Anterior intercostal arteries from the internal thoracic artery and posterior intercostal arteries from the descending thoracic aorta (correct)
  • Superior vena cava and inferior vena cava

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

  • It is responsible for gas exchange in the lungs
  • It supports the structure of the ribcage
  • It is a partition between the two pleural cavities (correct)
  • It houses the heart, lungs, and major blood vessels

How is the mediastinum divided within the thoracic cavity?

<p>By a horizontal plane between the sternal angle till the lower border of the 4th thoracic vertebra into superior mediastinum and inferior mediastinum (B)</p> Signup and view all the answers

Where does the venous blood from the thoracic cage drain into?

<p>Azygos system of veins which end in Superior vena cava (D)</p> Signup and view all the answers

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