If something slows an asteroid, it may fall towards the Sun, towards Mars, or towards Jupiter. As both Jupiter and Mars move past the asteroids in their orbits, they may be pulled slightly towards those huge bodies in their orbits. In fact, Phobos and Diemos, the two tiny moons of Mars, may be captured asteroids.
Resistance - is opposition to flow and is a measure of the amount of friction blood encounters as it passes through the vessels. Blood flow (F) is directly proportional to the difference in blood pressure (Î´P) between two points in the circulation, that is, the blood pressure, or hydrostatic pressure, gradient. Thus, when Î´P increases, blood flow speeds up, and when Î´P decreases, blood flow declines.
â¢ This question asks you to choose the factors that will decrease the blood pressure. Study Questions on Factors that Affect Blood Pressure: 1. (Page 1.) What are the four main factors affecting blood pressure? 2. (Page 3.) Blood cells and plasma encounter resistance when they contact blood vessel walls. What is this resistance called? 3. (Page 3.)