Blood pressure is highest in the arteries and declines to zero or negative pressure in the vena cavae.

Question

Quizplus · Accepted Answer

Blood pressure is highest in the arteries because the heart pumps blood into them with force. As blood flows through smaller and smaller blood vessels, the pressure decreases. When it reaches the veins and vena cavae, the pressure is much lower, sometimes even negative, due to the resistance offered by the small capillaries.

Blood Pressure Is Highest in the Arteries and Declines to Zero