The velocity of blood is slowest in the capillaries and pressure of blood is lowest in the veins. Which of the following is NOT an accurate description of the benefits of slow, low pressure blood in the capillary beds?

Question

Quizplus · Accepted Answer

Lower pressure in the capillary bed does not directly help to increase pressure in the venous circulation. The pressure in the venous circulation is actually created by the pumping action of the heart and the elastic recoil of the arterial walls. However, the slow, low pressure blood in the capillary beds does allow for greater exchange of nutrients, gases, and waste products between the blood and surrounding tissues. Additionally, the low pressure on the venous end of the capillary bed allows for the reabsorption of fluid back into the plasma, which helps to prevent the buildup of excess fluid in tissues.

The Velocity of Blood Is Slowest in the Capillaries and Pressure