The heart. All blood pressure is controlled by the heart.
Arterial blood is under direct pressure from the heart and is oxygen rich, which venous blood is oxygen poor and is under low pressure.
The blood pressure within the right atrium is called central venous pressure (CVP). It is a measure of the pressure in the large veins close to the heart and reflects the amount of blood returning to the heart.
The partial pressure of carbon dioxide in venous blood is around 40 mmHg.
The central venous pressure or right atrial pressure is the pressure of the blood in the thoracic vena cava near the right atrium. The pressure reflects the amount of blood that return to the heart and can be pumped back through the body.
Venous blood flow is easiest to control. Arterial blood flow is hardest to control because it is under pressure from the heart.
these factors can increase central venous pressure: decreased cardiac output, increased blood volume, venous constriction,forced expiration, muscle contraction
these factors can increase central venous pressure: decreased cardiac output, increased blood volume, venous constriction,forced expiration, muscle contraction
arterial pressure
carefully
The venous system is responsible for returning deoxygenated blood from the tissues back to the heart. It transports this blood through a network of veins, which have valves to prevent the backflow of blood. The venous system also plays a role in regulating blood volume and pressure in the body.
The primary differences between venous blood and arterial blood are that arterial blood is oxygenated, under great pressure, and is moving from the heart, and that venous blood is deoxygenated, under low pressure, and is moving towards the heart.
weakening of the venous valves