Really, I know just a factor which is that the veins have a valve which helps to push the blood. This is because the vein has a thin muscular wall and low pressure. Therefore,the valve is there to prevent the flow back of blood.
the contraction and relaxation of the myocardium and the opening and closing of valves
Yes, blood flows into the heart via veins. Blood flows away from the heart in aryteries.
Through both! The pulmonary veins carry oxygenated blood to the heart and then arteries carry it from the heart to the body as a whole. Veins return de-oxygenated blood to the heart.
Blood Travels through Veins
Blood flows back to the heart through the veins.
blood travels away from the heart through arteries and blood travels to the heart through the veins
Yes, blood flows into the heart via veins. Blood flows away from the heart in aryteries.
Veins are blood vessels that carry blood toward the heart.
Through both! The pulmonary veins carry oxygenated blood to the heart and then arteries carry it from the heart to the body as a whole. Veins return de-oxygenated blood to the heart.
The Heart
Blood Travels through Veins
Veins have valves in them which help transport the blood.
By your heart pumping the blood through your veins.
two things that are next to the heart are veins and blood because veins are coming out of the heart and blood goes through the heart
Blood leaves the heart through arteries, and returns through veins.
Blood flows back to the heart through the veins.
blood travels away from the heart through arteries and blood travels to the heart through the veins
So it will pump blood through the heart.