Blood Circulation Time

The blood circulation time is the time during which a blood particle passes through the systemic and pulmonary circulation once.

The systemic circulation begins from the left ventricle of the heart, blood moves through the aorta and its branches, gives oxygen and nutrients to tissues, takes up carbon dioxide and metabolic products, and returns to the right atrium through the superior and inferior vena cava.

The pulmonary circulation begins from the right ventricle of the heart, blood moves through the pulmonary artery to the lungs, where it gives off carbon dioxide and is saturated with oxygen, then returns through the pulmonary veins to the left atrium.

Thus, the blood circulation time is the total time it takes for the systemic and pulmonary circulation to pass. For an adult, on average it takes about 1 minute.

The blood circulation time is the time during which a blood particle passes through the systemic and pulmonary circulation once.

Blood circulation is the continuous movement of blood through vessels to ensure the exchange of substances between blood and tissues. There are major and minor circles of blood circulation.

The systemic circulation begins from the left ventricle of the heart. Blood enters the aorta, passes through arteries, capillaries, veins and returns to the right atrium.

The small circle begins from the right ventricle of the heart. Blood enters the pulmonary trunk, pulmonary arteries, passes through the pulmonary capillaries, pulmonary veins and returns to the left atrium.

The time during which an erythrocyte completes a complete blood circulation cycle in a large and small circle is called the blood circulation time. For an adult it is about 60 seconds.