Which functions should Selena use as headings to complete
the chart?
OX: Flight
Y: Feeding and Digestion
X: Maintaining Body Temperature
Y: Circulating Oxygen
O X: Flight
Y: Circulating Oxygen
O X : Maintaining Body Temperature
Y: Feeding and Digestion

flight, feeding and digestion don't forget to follow

the answer to your question is sperm

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.