Which organ works with lungs to pump blood and oxygen throughout the body?

Which organ works with lungs to pump blood and oxygen throughout the body?

• A. Pancreas
• B. Heart
• C. Kidneys
• D. Liver

Answer: (B)

Blood needs a pump to move through the vessels, while the lungs supply the oxygen that blood carries. The heart is that pump and keeps blood flowing through two loops: the pulmonary circuit sends deoxygenated blood to the lungs to be oxygenated, then the systemic circuit delivers the oxygen-rich blood to every body tissue and returns it to the heart. The lungs and heart work together to continuously refresh blood with oxygen and remove carbon dioxide. The other organs listed—pancreas, kidneys, and liver—have important roles in digestion, filtration, and metabolism, but they do not function as the heart, the organ that actually pumps blood throughout the body.

Blood needs a pump to move through the vessels, while the lungs supply the oxygen that blood carries. The heart is that pump and keeps blood flowing through two loops: the pulmonary circuit sends deoxygenated blood to the lungs to be oxygenated, then the systemic circuit delivers the oxygen-rich blood to every body tissue and returns it to the heart. The lungs and heart work together to continuously refresh blood with oxygen and remove carbon dioxide. The other organs listed—pancreas, kidneys, and liver—have important roles in digestion, filtration, and metabolism, but they do not function as the heart, the organ that actually pumps blood throughout the body.