they aren't the same. the digestive system is all about convering food into appropriate energy sources and other items used by the body, the circulatory system is where oxygen is carried around the body in the blood stream from the lungs to all the muscles and the brain.
digestive - food, eating
circulatory - breathing, oxygen, blood
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the digestive system and the respiratory system, or the lymphatic system and the endocrine system, or the digestive system and the cardiovascular system, or the endocrine system and the cardiovascular system
digestive and circulatory
digestive and circulatory
Skeletal, Circulatory, digestive
Most jellyfish do not have specialized digestive, osmoregulatory, central nervous, respiratory, or circulatory systems.
circulatory and digestive
they are all systems
The veins are found in the circulatory system.
the digestive system breaks down what we eat the the circulatory system delivers the nutrients to cells for metabolism
The digestive, circulatory, muscular and nervous system.
A lion's body systems include the digestive system for breaking down food, the circulatory system for transporting nutrients and oxygen, the respiratory system for breathing, the nervous system for coordination and control, and the muscular system for movement.