INBDE Practice Exam 2025 – Complete Study Guide

Question: 1 / 1180

What layer, made of elastic and collagenous fibers, is thicker in veins?

Tunica Media

Endothelium

Tunica Adventitia

The Tunica Adventitia layer, also known as the Tunica Externa, provides structural support and protection for the veins. In contrast, the Tunica Media, Tunica Intima, and Endothelium layers are thinner and do not provide as much structural support. The Tunica Media is mainly responsible for regulating vessel diameter, while the Tunica Intima and Endothelium function in maintaining the inner lining of blood vessels. Therefore, the Tunica Adventitia is thicker in veins to provide additional support for the walls of these vessels, which must withstand lower blood pressure compared to arteries.

Get further explanation with Examzify DeepDiveBeta

Tunica Intima

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy