Topics: Cardiovascular System Quiz
What is the purpose of the valves in the heart?
A. To prevent pathogens from entering the heart
B. To control how fast the heart beats
C. To keep the blood flowing in only one direction
D. To separate the heart into two sides
Select your answer:

Topics:
Cardiovascular Adaptation Refresher Urinary System Medical Terms Food for Thought Pulse Biotechnology: Tools & Techniques Circulatory System - Pathway of Blood Diet The Human Eye Surgical & Complementary Terms DNA and Genetic Manipulation Muscle & Nerve Tissue Cardiovascular Diseases Cardiac & Diseases of Blood Flow Proteins Disorders of The JointsOther quiz:
Knee Anatomy › ViewWhere does the patellar tendon insert?
A. Tibia plateau
B. Tibial shalt
C. Tibial tuberosity
D. Fibular head
Disease › View
Which hygiene step would best help prevent a staph infection?
A. Washing a kitchen counter
B. Cleaning a pet cage
C. Showering regularly
D. Sneezing into your elbow