How do the various organ systems work?

The musculoskeletal system consists of the skeleton and muscles. The digestive system consists of a number of organs (mouth, pharynx, esophagus, stomach, liver, intestines). The respiratory system consists of the following organs: nasal cavity, trachea, bronchi, lungs. The circulatory system is made up of the heart and blood vessels. The nervous system consists of the brain and nerves.



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