Why do you pass out if you lock your knees?

1 answer:

8 0

It's caused by blood pooling in the legs, so there's insufficient return to the heart and brain. Normally, moving one's legs helps to pump blood back to the heart through muscle contraction. Locking the knees makes standing still easier, but reduces use of the leg muscles. In some people, this pooling may lead to hypoperfusion of the brain and fainting, which is essentially the body's way of putting the brain and the legs and the heart at the same level.

You might be interested in

What led biologists to assign universally accepted names to organisms

ser-zykov [4K]

They need to create an unique name that would be recognized as belonging to one organism

3 0

3 years ago

12. Which molecules must be present in order for energy production to

MrRissso [65]

Answer:

C. oxygen

Explanation:

Oxygen is needed to help the process of turning glucose into ATP. The initial step releases just two molecules of ATP for each glucose.

4 0

3 years ago

What is the function of fermentation

Rufina [12.5K]

Fermentation enables cells to produce chemical energy from the breakdown of sugar

7 0

1 year ago

As much as 25 percent of the fruits and vegetables grown in Chinese agricultural regions rot before they can be transported the

irinina [24]

I think it is a I hope this help you

7 0

3 years ago

An experiment is designed to determine if wheat grows better when it is planted alone or with clover. The design calls for 3 pan

Viktor [21]

Answer: Option B

Explanation:

Usually in scientific experiments, at least one parameter is checked; here, the growth rate of wheat in two different conditions is being evaluated.

Hence, growth rate of wheat alone in pans A, B and C becomes the standard or referential control against which the experimental control (Wheat + clover) in pans D, E and F is evaluated, since both treatments are exposed to the same external conditions.

I hope this helps

4 0

2 years ago