Its heart does. this is for my science HWK at school. I think this is the answer.
The heart.
The Heart.
your heart is a pump and keeps the blood flowing
the heart never relaxes and the blood always keeps on moving to other parts of the body
The octopus has gills like fish, which the water passes across in a counter current (the opposite way to the blood) oxygenising blood with oxygen from the water. This blood is transported around the body. Which keeps pumping all the way around the body to then reach the heart and pass through again. This is a never ending cycle.
=which part of circulatory serve as a pump that keeps the blood moving?==a.arteries==b.blood vessels==c.veins==d.heart=
To oxygenate the blood
the gills
what water does for your body?It keeps us hydrated and keeps you moving and helps the brain and keeps your blood stream flowing and keeps you healthy and strong and it keeps your body alive and your musclse healthy and keeps you from a heat stroak and all the other diseases
It is necessary for blood to pump through your body because it keeps you alive. It sends the blood to your organs and keeps them from failing.
blood donation
Your blood. :)