Ace the Phlebotomy Tech Challenge 2025 – Stick It to the Test and Succeed!

Question: 1 / 400

Lumen is defined as

The outer layer of an artery

Space within the walls of an artery, vein, or tube

The correct explanation for this question is that lumen refers to the space within the walls of an artery, vein, or tube. This means that options A, C, and D are incorrect because they refer to different anatomical structures that are not the same as lumen. Option B is the only choice that accurately describes lumen and its location within the body. A lumen is the hollow part of a tubular structure, such as blood vessels or the digestive tract, through which substances flow. So, option B is the correct choice because it accurately defines lumen.

Get further explanation with Examzify DeepDiveBeta

A blockage in a blood vessel

The innermost lining of the heart

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy