the backflow of blood stops in veins by ....... ... | MedicalQuiz.Net

★ Biology Quiz

the backflow of blood stops in veins by …….

A. valves

B. muscles

C. heartbeats

D. lymphatic vessels

Select your answer:

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The Energy Nutrients Human Physiology Pathogens, Disease and Immunity Human Excretory System Vision and Hearing Defects Vision (AP Psych) Health Related Fitness Neurology Diagnostics and Pathology Reports Hormones Psychology Vocabulary Lungs Digestive and Circulatory System Components of Physical Fitness Immunology

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