Histologically, which layer is described as squamous epithelium supported by a sparse connective tissue layer?

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Prepare for your AandP Blood Vessels Test. Study with flashcards and multiple choice questions, each question includes hints and detailed explanations. Get ready for your upcoming exam!

Multiple Choice

Histologically, which layer is described as squamous epithelium supported by a sparse connective tissue layer?

Explanation:
The description matches the tunica intima. The inner lining of a vessel is endothelium, which is simple squamous epithelium, and it sits atop a sparse subendothelial connective tissue layer. The tunica media is the middle layer of smooth muscle and elastic fibers, not lined by squamous epithelium. The outer tunica externa (adventitia) is mainly connective tissue surrounding the vessel. So the squamous epithelial lining with a sparse connective tissue support describes the tunica intima.

The description matches the tunica intima. The inner lining of a vessel is endothelium, which is simple squamous epithelium, and it sits atop a sparse subendothelial connective tissue layer. The tunica media is the middle layer of smooth muscle and elastic fibers, not lined by squamous epithelium. The outer tunica externa (adventitia) is mainly connective tissue surrounding the vessel. So the squamous epithelial lining with a sparse connective tissue support describes the tunica intima.

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