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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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snowhite snowhite
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8 years ago
The presence of ________ in the veins and the action of skeletal muscle pressing on the walls ensure that blood return to the heart is in one direction.
Textbook 
Human Anatomy

Human Anatomy


Edition: 7th
Authors:
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WideEyesWideEyes
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snowhite Author
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8 years ago
Slight Smile Wonderful
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8 years ago
Mark it solved when you get a chance Slight Smile
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