Which system transports oxygen-rich blood around the body?

Which system transports oxygen-rich blood around the body?

• A. Circulatory System
• B. Respiratory System
• C. Digestive System
• D. Nervous System

Answer: (A)

The circulatory system is responsible for transporting oxygen-rich blood around the body. It includes the heart, blood, and blood vessels. The heart acts as a pump that pushes oxygen-filled blood from the lungs out to every cell in the body through arteries. As the blood delivers oxygen, it becomes less oxygen-rich and returns to the heart through veins, so it can be pumped back to the lungs to pick up more oxygen. The other systems have different main jobs: the respiratory system brings in oxygen and releases carbon dioxide in the lungs, the digestive system breaks down food for energy, and the nervous system sends signals to control body activities. But when we focus on moving oxygen-rich blood to all body parts, the circulatory system is the one that does that work.

The circulatory system is responsible for transporting oxygen-rich blood around the body. It includes the heart, blood, and blood vessels. The heart acts as a pump that pushes oxygen-filled blood from the lungs out to every cell in the body through arteries. As the blood delivers oxygen, it becomes less oxygen-rich and returns to the heart through veins, so it can be pumped back to the lungs to pick up more oxygen. The other systems have different main jobs: the respiratory system brings in oxygen and releases carbon dioxide in the lungs, the digestive system breaks down food for energy, and the nervous system sends signals to control body activities. But when we focus on moving oxygen-rich blood to all body parts, the circulatory system is the one that does that work.