1. Foregut or stomodaeum: It consists of pharynx, oesophagus, crop and gizzard.
2. Pharynx: It is very short, narrow but muscular tube that opens into oesophagus.
3. Function: Conduction of food into the oesophagus.
4. Oesophagus: It is slightly long and narrow tube which opens into crop.
5. Crop: Crop is a large, pear shaped and sac- like organ.
6. Function: It temporarily stores the food and then sends it to gizzard.
7. Gizzard: Gizzard or proventricuius is a small spherical organ. It is provided internally with a circlet of six chitinous teeth and backwardly directed bristles.The foregut ends with gizzard.
Function: The chitinous teeth present in gizzard are responsible for crushing the food and the bristles help to filter the food.
