Задание

𝐅𝐢𝐥𝐥 𝐢𝐧 𝐭𝐡𝐞 𝐠𝐚𝐩𝐬.

The circulatory system pumps nutrients and oxygen around the body. Blood lacking oxygen enters the right of the through the . The heart pumps this blood through a and into the right . It travels through to the lungs and receives oxygen. It travels back to the heart through pulmonary . The heart pumps the blood out through the aorta. It flows through in the body and delivers oxygen. The blood travels back through veins and the cycle repeats. But sometimes disruptions in the cycle occur. The heart may not pump blood effectively. This is called an .