INBDE (Integrated National Board Dental Examination) Practice Exam

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Prepare for the Integrated National Board Dental Examination with interactive quizzes and comprehensive testing materials. Boost your confidence and performance on the exam by utilizing tailored resources designed for dental professionals.

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What layer, made of smooth muscles and elastic fibers, is thicker in arteries?

Tunica Intima
Tunica Media
Tunica Adventitia
Endothelium

The correct answer is: Tunica Media

The tunica media is the correct answer because it is the middle layer of an artery responsible for maintaining and adjusting blood pressure. The tunica intima is the innermost layer, consisting of endothelial cells. The tunica adventitia is the outermost layer, providing structural support. The endothelium, while part of the tunica intima, is not a specific layer and is responsible for many functions such as regulating blood flow and maintaining blood vessel health. Therefore, it is thicker in arteries because of its smooth muscles and elastic fibers that allow it to adjust and regulate blood pressure.