Before 1822, little was known about the stomach until an unusual event occurred. A patient of Dr. Beaumont was left with a permanent open gastric fistula (i.e. a hole on his body leading to the stomach). This allowed Dr. Beaumont to study the stomach by inserting and removing objects directly from the stomach cavity, leading to many breakthroughs.
A very detailed interactive account of the systems in the human body, as well as the organs’ functions.
Detailed description of the digestive system and the functions of different parts + diagrams.