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BIO NMDCAT Sexually transmitted diseases
nmdcat.online July 16, 2026

The structural basis for the severe cardiovascular complications seen in tertiary syphilis, such as aortic aneurysms, is the chronic inflammation and destruction of:

A. The endocardium of the heart valves
B. The vasa vasorum supplying the thoracic aorta
✓
C. The coronary arteries
D. The pulmonary veins

📝 Explanation

The correct option is The vasa vasorum supplying the thoracic aorta. Cardiovascular syphilis specifically targets the vasa vasorum (the small blood vessels supplying the aortic wall). This causes ischemia and weakening of the aortic wall, leading to dilation and life-threatening aneurysms.

📖 Additional Information

  • The endocardium of the heart valves
  • The vasa vasorum supplying the thoracic aorta
  • The coronary arteries
  • The pulmonary veins

The correct option is The vasa vasorum supplying the thoracic aorta. Cardiovascular syphilis specifically targets the vasa vasorum (the small blood vessels supplying the aortic wall). This causes ischemia and weakening of the aortic wall, leading to dilation and life-threatening aneurysms.

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