★ Cardiology Services
The structure that prevents the backflow of blood in the heart is known as the____________.
A. septum
B. mediastinum
C. valve
Preview next quiz:
The root word ven/o means?
A. vein
B. artery
C. capillary
Trending Topics
Loading...
About grammarquiz.net
GrammarQuiz.Net - Improve your knowledge of English grammar, the best way to kill your free time.