Certified Tumor Registrar (CTR) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the Certified Tumor Registrar Exam. Access multiple choice questions and flashcards, with hints and detailed explanations. Ace the test with confidence!

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!

Practice this question and more.

The prefix "endo" in the word endocardium means?

Outside
Between
Within
Over

The correct answer is: Within

The prefix "endo" comes from the Greek word "endon," which means "within" or "inside." In the context of the term "endocardium," this prefix refers to the inner layer of the heart, which lines the heart chambers and valves. Understanding the meaning of "endo" helps clarify that it indicates a location that is internal rather than external, linking it specifically to structures that are situated inside another organ or cavity. Thus, "endocardium" pertains to the innermost lining of the heart, which accurately aligns with the definition of "within."