Deoxygenated blood arrives at the heart via the main vein from the . It gathers in the right-hand side atrium. The valve opens and blood passes into the right . The valve between the ventricle and closes and the heart muscle contracts forcing the blood through the valve into the to the lungs. blood then returns to the left-hand side of the heart via a vein. The blood gathers in the left before passing through the valve into the left ventricle. The heart contracts again, this time harder. The blood is pumped through another valve and along the main to the body, called the aorta. And the cycle begins again... Print a Worksheet version
The valve between the ventricle and closes and the heart muscle contracts forcing the blood through the valve into the to the lungs. blood then returns to the left-hand side of the heart via a vein. The blood gathers in the left before passing through the valve into the left ventricle. The heart contracts again, this time harder. The blood is pumped through another valve and along the main to the body, called the aorta. And the cycle begins again... Print a Worksheet version
blood then returns to the left-hand side of the heart via a vein. The blood gathers in the left before passing through the valve into the left ventricle. The heart contracts again, this time harder. The blood is pumped through another valve and along the main to the body, called the aorta. And the cycle begins again... Print a Worksheet version
The heart contracts again, this time harder. The blood is pumped through another valve and along the main to the body, called the aorta. And the cycle begins again... Print a Worksheet version
And the cycle begins again...
Print a Worksheet version
