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What maintains venous blood flow?

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Anonymous

12y ago
Updated: 8/19/2019

valves

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12y ago

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What type of bleeding is easiest to control?

Venous blood flow is easiest to control. Arterial blood flow is hardest to control because it is under pressure from the heart.


What are the two examples of blood flow?

venous and arterial


What is the function of venous valves?

Valves aid in venous return by preventing the back flow of blood.


How is blood pressure maintained in veins to cope with the force of gravity?

The amount of venous vessel pressure causes the 'venous return' which maintains blood volume. This is driven by the efferent pathway of the sympathetic nervous system which causes the constriction of the blood vessels which pushes the red blood cells in the veins back to the heart (flow is one way due to valves in the veins).


What is the condition where normal blood flow is slowed or halted?

Coagulation or clotting means to stop blood flow.


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What factors directly influence venous blood flow?

Factors that directly influence venous blood flow include venous pressure, intrathoracic pressure changes during respiration, skeletal muscle contractions, venous valves, and sympathetic nervous system activity. These factors help propel blood back to the heart against gravity.


What is hepatopetal portal venous blood flow?

Hepatopetal portal venous blood flow refers to the normal direction of blood flow within the portal vein, where blood is carried from the gastrointestinal tract and spleen to the liver. This flow is essential for delivering nutrients and metabolites for processing and detoxification by the liver. Any disruption or reversal of this flow can indicate underlying liver disease or portal hypertension.


What happens to your liver during shock?

Hypovolemic shock markedly decreases total liver blood flow by a reduction in portal venous blood flow.


What type of hemorrhage is characterized by a steady even flow of dark red blood?

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Which type of hemorrhage is characterized by a steady even flow and the blood will be dark in color?

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Explain why arterial blood flow is pulsatile and venous flow is not?

Arterial blood flow is pulsatile due to the contraction of the heart, which produces pressure waves that cause the arteries to expand and contract rhythmically. In contrast, venous flow is more constant and steady because veins have one-way valves that prevent backflow and the pressure in the venous system is lower compared to the arteries.