Question

Mean blood pressure in the brain of a standing person _______ the blood pressure at the heart.

a. is higher than
b. is lower than
c. is exactly the same as
d. is approximately the same as
e. has no relationship with

Answer 1

The mean blood pressure in the brain of a standing person is lower than the blood pressure at the heart.

Step-by-step explanation:

The mean blood pressure in the brain of a standing person is lower than the blood pressure at the heart.

When a person is standing, the blood has to overcome the force of gravity to reach the brain, resulting in a decrease in blood pressure. The heart has to work harder to pump blood against gravity to the brain, which leads to a higher blood pressure at the heart.

Therefore, option b. is the correct answer.