As blood moves away from the heart toward the tissues, the relative size of blood vessels ________, the blood pressure ________, and the velocity of blood flow ________.
A) decreases; decreases; decreases
B) decreases; increases; increases
C) decreases; decreases; increases
D) increases; decreases; decreases

Question

Quizplus · Accepted Answer

As blood moves away from the heart toward the tissues, the blood vessels branch out and become smaller in diameter, leading to a decrease in blood pressure due to the increased resistance and surface area across which the blood must travel. Additionally, the velocity of blood flow decreases as the total cross-sectional area of the blood vessels increases, spreading the blood flow more thinly across a larger area.

As Blood Moves Away from the Heart Toward the Tissues