heart, blood, vessels nose, trachea, lungs brain, spinal cord, nerves esophagus, stomach, intestines
Which example best shows structures that make up the digestive system in the human body?

Options:
- heart, blood, vessels
- nose, trachea, lungs
- brain, spinal cord, nerves
- esophagus, stomach, intestines

esophagus, stomach, intestines