Simplify the following text for a Grade 7 native English-speaking person.
Original: The mean BP , due to pumping by the heart and resistance to flow in blood vessels , decreases as the circulating blood moves away from the heart through arteries . Blood pressure drops most rapidly along the small arteries and arterioles , and continues to decrease as the blood moves through the capillaries and back to the heart through veins .
Simplified: Blood pressure is higher in arteries than it is in other blood vessels .