because of the blood muscles that push the heriastic pulley. the move the blood through the veins and arteries.
Veins and Arteries move the blood throughout your body which are part of the Respiratory System with the help of the heart pumping the blood.
OXYGEN
Your veins are running all throughout your body with blood running through them. And all the veins are connected the the heart.
Structurally, veins and arteries are very similar. The main differences is that veins move blood towards the heart, whereas arteries move blood away from the heart.
The heart pumps it. When your heart beats it squeezes blood in the heart into the arteries and from the arteries to the veins and from the veins back into the heart.
veins move blood to the heart
veins
skeletal muscle contraction that squeezes the blood in the veins.
Because muscles on the outside of the veins help the blood move. Within the veins are tiny one-way valves that normally keep blood flowing back toward the heart. When the blood arrives at the right atrium, it is pulled in by the expansion of the chamber, which lowers the pressure within the atrium.
The Circulatory System :)
The Circulatory System :)