Kiesselbach's plexus is primarily located in which nasal structure?

Kiesselbach's plexus is primarily located in which nasal structure?

• A. Anterior nasal septum
• B. Posterior nasal wall
• C. Inferior turbinate
• D. Nasal roof

Answer: (A)

Where Kiesselbach's plexus sits and why that area bleeds easily is being tested. Kiesselbach's plexus is located in the anterior part of the nasal septum, in Little's area, just inside the nostril. It is formed by a network of arteries that converge there—the anterior ethmoidal artery, the sphenopalatine artery, the greater palatine artery via its septal branch, and the superior labial artery. This dense vascular web lies just under the mucosa, so minor trauma, dryness, or irritation can lead to nosebleeds. The other sites listed—posterior nasal wall, inferior turbinate, and nasal roof—do not contain this characteristic anterior plexus and are not the typical source of the common nosebleed, which is why the anterior nasal septum is the correct location.

Where Kiesselbach's plexus sits and why that area bleeds easily is being tested. Kiesselbach's plexus is located in the anterior part of the nasal septum, in Little's area, just inside the nostril. It is formed by a network of arteries that converge there—the anterior ethmoidal artery, the sphenopalatine artery, the greater palatine artery via its septal branch, and the superior labial artery. This dense vascular web lies just under the mucosa, so minor trauma, dryness, or irritation can lead to nosebleeds. The other sites listed—posterior nasal wall, inferior turbinate, and nasal roof—do not contain this characteristic anterior plexus and are not the typical source of the common nosebleed, which is why the anterior nasal septum is the correct location.