What Determines the Movement of Blood in Systemic Veins

question 81

Multiple Choice

What determines the movement of blood in systemic veins?

• A) The blood pressure difference between systemic capillaries and the right atrium.
• B) The contraction and relaxation of skeletal muscles.
• C) The decrease of thoracic pressure and increase of abdominal pressure due to diaphragm movement.
• D) Valves in the veins.
• E) All of the above.

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