When we chew and then swallow meat, we stimulate glands (pancreatic acinar cells) to secrete hydrochloric acid and proteases. Amino acids released into the human stomach by the acidic lytic sap are forwarded to and taken up by the intestine. When compared with the human endocrine system, the Venus flytrap also operates as a mouth, stomach and intestine, all combined. Artwork by Irina Yurchenko.
The "Quick Guide" Section of Current Biology gives you a short and readable introduction to a particular biological topic, structure, or taxon.
In this case: "Everything You Always Wanted to Know About Carnivory"
You will find this intersting article here: doi:10.1016/j.cub.2014.11.036