Katydid's Digestive System
How Katydids Eat
Katydids mostly eat plants, leaves, insect eggs, dead insects, and slow moving insects.The Katydid's digestive system is made up of three parts: the foregut, the midgut and the hindgut. The digestive system stretches throughout the entire length of the body, beginning with the mouth as part of the foregut and ending with the anus, as part of the hindgut.
Step 1: Foregut: The mouth, pharynx , esophagus, crop and gizzard make up the foregut. Food enters the digestive system through the mouth and is broken down by the saliva before moving down the esophagus and into the crop. From the crop the food moves into the gizzard, where a proteincalled chitin grinds down the food.
Step 2: Midgut: The stomach makes up the midgut and is surrounded by tiny pouches called caecae. The caecae make digestive juices and secrete them into the stomach once the food empties into the stomach from the gizzard. The stomach is coated in a membrane that protects the grasshopper's internal organs against the digestive juices. The membrane also absorbs the digested food and enzymes.
Step 3: Hindgut: Three structures make up the hindgut: the ileum, colon and rectum, which opens up into the anus. While the absorbed food is taken to the grasshopper's many body parts where it is put to use, undigested food continues through the digestive system. As the undigested food travels from the ileum to the rectum, the food is turned into hard, dry pellets, which are excreted as feces.
(1)http://www.tutorvista.com/content/biology/biology-ii/nutrition/grasshopper-digestive-system.php
(2) http://en.wikipedia.org/wiki/Grasshopper#Diet_and_digestion
Step 1: Foregut: The mouth, pharynx , esophagus, crop and gizzard make up the foregut. Food enters the digestive system through the mouth and is broken down by the saliva before moving down the esophagus and into the crop. From the crop the food moves into the gizzard, where a proteincalled chitin grinds down the food.
Step 2: Midgut: The stomach makes up the midgut and is surrounded by tiny pouches called caecae. The caecae make digestive juices and secrete them into the stomach once the food empties into the stomach from the gizzard. The stomach is coated in a membrane that protects the grasshopper's internal organs against the digestive juices. The membrane also absorbs the digested food and enzymes.
Step 3: Hindgut: Three structures make up the hindgut: the ileum, colon and rectum, which opens up into the anus. While the absorbed food is taken to the grasshopper's many body parts where it is put to use, undigested food continues through the digestive system. As the undigested food travels from the ileum to the rectum, the food is turned into hard, dry pellets, which are excreted as feces.
(1)http://www.tutorvista.com/content/biology/biology-ii/nutrition/grasshopper-digestive-system.php
(2) http://en.wikipedia.org/wiki/Grasshopper#Diet_and_digestion