How does the circulatory and digestive systems work together?
a. the digestive system provides oxygen to circulatory system which then transports it throughout body.
b. the circulatory system brings food to the digestive system to be broken down.
c. the digestive system breaks down food and the circulatory system transports the nutrients throughout the body.
d. these systems do not work together.

this transfer is call conjunction

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.