Question

The blood pressure at the feet is more than blood pressure in the head. Explain why?

Answer 1

Hint: The blood pressure is the pressure of the blood within the arteries. It is produced primarily by the contraction of the heart muscle. Its measurement is recorded by two numbers. The first (systolic pressure) is measured after the heart contracts and is highest.

Complete answer: The pressure of liquid column is given by P = hpg, where h is depth, p is density and g is acceleration due to gravity.
Therefore, pressure of the liquid column increases with depth. The height of the blood column in a human body is more at feet than at the brain. Therefore, the blood pressure in humans is greater at the feet than the brain. Thats why, by elevating your legs you are taking pressure off the veins. By standing or sitting for extended periods of time, you are putting more pressure on your veins. Elevating your legs helps to take the pressure off your veins.
Additional information: High blood pressure may lead to decreased circulation in your legs and feet. This decreased circulation may show up as a variety of other symptoms. Examine your lower legs closely to see if you are experiencing any of the following signs: Feet and legs are unusually colder to the touch.

Note When you are stressed, your body sends stress hormones — adrenaline and cortisol — into the bloodstream. These hormones create a temporary spike in blood pressure, causing your heart to beat faster and blood vessels to narrow.