Select your answer:
Topics:
Sexual Reproduction Nervous System: Diseases/Problems/Illnesses Human Health Homeostasis - Vision Correction Tongue and Skin Human Reproduction Dyslexia Circulatory System - Pathway of Blood Cell Cycle; Cancer Acute Responses to Exercise Nail Enhancement Circulatory and Nervous System Forensic Pathology The Cell The Human BodyOther quiz:
Cardiovascular and Respiratory › Viewinflammation of the lining of the bronchi
A. bronchitis
B. emphysema
C. COPD
D. asthma
Circulatory / Respiratory › View
Which structure prevents the backflow of blood from the ventricles to the atria?
A. AV valves
B. septum
C. sinoatrial node
D. atrioventricular node
E. superior vena cava