The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

videoHuman circulatory and digestive system This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and ...

Haemoglobin is bulky, so there's not much space for anything else inside the red blood ... a tour around the circulatory system and digestive system in the human body, through blood vessels ...

PBS Nova spoke with physiology experts and competitors to find out what happens to the human body during speed eating ...