Deoxygenated blood returns from the body to the heart through the right atrium, which then contracts to transfer it to the right ventricle.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Deoxygenated blood returns from the body to the heart through the right atrium, which then contracts to transfer it to the right ventricle.
Deoxygenated blood travels through the heart in a coordinated process known as the pulmonary circulation. Deoxygenated blood returns to the right atrium from the body through the superior and inferior vena cava. When the right atrium contracts, the tricuspid valve opens, allowing blood to flow into the right ventricle. During ventricular contraction, the pulmonary valve opens, enabling deoxygenated blood to be pumped into the pulmonary artery. This artery carries the blood to the lungs, where carbon dioxide is exchanged for oxygen. Oxygenated blood then returns to the left atrium via the pulmonary veins, initiating the systemic circulation through the left side of the heart.