The valves help counter the effect of gravity by preventing the fluid in the vessels from "falling down."
No relationship at all.
weight = mass x gravity
Everything
Gravity, because of the structures of gravity, gravity has no measure whereas density has units of mass..
The force of gravity decreases as the distance between two bodies increases.
the relationship between buoyant force and gravity is that both definitions have to do with floatation . gravity and buoyant both keep you your object afloat so that it does not submerge
The force of gravity between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. This means that increasing the distance between two objects decreases the force of gravity acting between them, while increasing the masses of the objects increases the force of gravity.
The relationship between the value of pi squared () and the acceleration due to gravity is that the square of pi () is approximately equal to the acceleration due to gravity (g) divided by the height of a pendulum. This relationship is derived from the formula for the period of a pendulum, which involves both pi squared and the acceleration due to gravity.
Valves in veins are one way valves in the tunica intima(endothelium) of the drainage vessel. They allow the blood to defy gravity and continue circulating up towards the heart to dump into the inferior/superior vena cava. They ensure that blood travels the direction it is supposed to, and does not fall back the wrong way. Lymphatic capillaries are part of the capillary exchange that occurs from artery->artierole->CAPILLARY DIFFUSION->venule->vein->heart. they are an accessory drainage system, beginning blindly in the body and eventually meeting up with the vein again.
The greater the mass the stronger the gravitational pull
the gravity of the moon greatly affects the tides.
The relationship between decreased mass and decreased gravity is directly proportional. This means that as the mass of an object decreases, the force of gravity acting on it will also decrease. This relationship is described by Newton's law of universal gravitation.