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 Differences in  Digestion in Different Organisms

Termite: termites have microorganisms in their digestive track that help them break down pieces of wood. All termites contain protozoans in their stomachs. Source: wiki answers.com

Amoeba: The amoeba surrounds the food with pseudopods and forms of food vacuole , then digests the food with digestive enzyme's. Source : Wiki answers.com

Bird: birds have a two-part stomach a glandular and a muscular portion. Hydrochloric acid and digestive &'s are in the first part and breakdown food then food goes into the second part. Called the gizzard The gizzard performs the same function as teeth in mammals, grinding and disassembling the food, the gizzard contains sand grains or small rocks to aid in the grinding process. Source: Wisconsinextension.Wisconsin.edu

Earthworm: The earthworm sucks in soil containing food, the food particles and soil go through a long esophagus into an organ called a crop where it is stored temporarily that it is forced into the gizzard that contracts and expands causing grains of sand and food, rub together. Enzymes chemically break down the food then digested food is absorbed by the blood. Source: urbanextension.Illinois.EDU

Cow: A cows food is called cud and is regurgitated and partially digested food. Cows eat. This cud for many hours in the day. Cows have four digestive compartments. The rumen holds up to 50 gallons of partially digested food. This is where cud comes from. There's good bacteria that helps digest the cows food and provides protein. The reticulum is called the hardware stomach because if cows accidentally eat hardware like fencing, it will latch on here often causing no damage, then the food goes to the omasum , which is like a filter, then finally the abomasums , which is like human stomach. Source: FDA.gov

Humans: food goes down your esophagus and lands in your stomach, where it gets mixed with gastric juices. The gastric juices. Write down the food and start to release nutrients. The carbohydrates, protein and fat in your foods must be in their smallest forms to be used by each cell. The final stage in digestion occurs in small intestine. Digested food from the stomach is pumped into the small intestine, which gets flooded with fluid and enzymes from the liver and the pancreas. Those chemicals help break down the molecules from the digesting food into smaller components. The smallest forms of the nutrients pass to the walls of the small intestine and are absorbed in the bloodstream. Source: kids health.org\digestive system