Octopus
Facts About Octopi
- The digestive system is a two opening system, with a mouth and an anus.
- The lips of the mouth are ridged to keep a grip on the food. One pair of salivary glands secretes digestive enzymes, while the the other secretes a toxin that immobilizes the prey.
- The octopus can also use its beak to drill through a shell and then injects digestive juices to dissolve the tissue.
- At the end of the esophagus, the crop temporarily stores the food before it enters the stomach. It contains digestive glands that have a similar role to the pancreas and liver.
- An octopus' stomach is very muscular and turns the food into slush before entering the caecum, where the digested food is filtered for nutrients.
- The remaining materials enter the intestine and then exit the octopus through the anus.