Biology · Circulatory System
All of the following factors aid in venous return to the heart EXCEPT:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Squeezing action of major muscles
- 2Left ventricular contraction✓
- 3One-way valves in the veins
- 4Negative intrathoracic pressure
Correct answer
Left ventricular contraction
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