Which of the following helps venous blood return to the heart? Group of answer choices pressure changes in the thoracic and abdominal cavities related to breathing contractions of skeletal muscles in the legs All of these are true one-way valves in veins
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Pressure changes in the thoracic and abdominal cavities related to breathing: When we breathe, the pressure changes in our thoracic and abdominal cavities. This change in pressure helps to push the venous blood back to the heart. So, this statement is true. Show more…
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All of the following mechanisms assist in returning venous blood to the heart except: a. an increase in heart rate b. pressure changes in the abdominal and thoracic cavities due to breathing c. contraction of skeletal muscles in the legs d. one-way valves located inside veins
Which of the following assists in the return of venous blood to the heart? a. valves b. skeletal muscle contraction c. respiratory movements d. reduction in cross-sectional area from venules to veins e. All of these are correct.
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