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.
R = Î´ P Q {\displaystyle R={\frac {\Delta P}{Q}}}. where R is the pulmonary vascular resistance (fluid resistance), Î´P is the pressure difference across the pulmonary circuit, and Q is the rate of blood flow through it.
White blood cells (leukocytes), red blood cells (erythrocytes) and platelets (thrombocytes). Blood flow is __________ to blood pressure because the pressure difference between the two ends of a vessel is the driving force for blood flow.