Digestive+-+Alysha






 * III. Digestive: Alysha Bridge **
 * 1) Compare and contrast the various organs and their order through the body. What role does each of them play (function, physical or chemical action?)
 * The starfish has its mouth on the underside of its body and that is it leads to the esophagus, which then goes to the two stomachs that the starfish has the cardiac and the Pyloric stomach. That food that went throughout first had to go through the arms of the starfish because that is where the tubes are that contain digestive glands that break down all the food so that the starfish get nutrients throughout its body. Once it goes through the body it makes it way back to the anus to get ride of the waist. Next, we have the Pig, and the pig is pretty close to the human body by how it is set up. It starts with the oral cavity, and then it goes to the esophagus just like we have and it leads to the stomach of the pig. After it goes through the stomach and secretes that material and it goes through the intestines large and small to send the nutrients throughout the body. And once the good and bad is separated then the bad goes out of the body through the anus. And lastly, we have the Crayfish, which reminded me of a mini-lobster because of its hard outer shell that is there to protect it from danger. The crayfish has some smaller organs throughout its body and they include the eyes, the green gland. And then there is the mandible, which is like the lower jawbone and then the esophagus. Next it goes to the nerve cords and then the digestive gland. Once the digestion is done it then goes out of the body through the anus. **

2. Which organisms have similar organs in the digestive system? How does that compare to the types of food that they eat?
 * Like I talked about before the pig, and the human body has a pretty close setup of how the body digests its food. The starfish is an echinoderm ** ** and its digestion is like the human body. The one animal or critter that isn’t like the human body is the Crayfish because it digests in three ways, just like other bugs that eat other bugs so there digestion system has to be different than the other ones. **

3. How is the organ adapted to provide as many reactions as possible in the shortest amount of space?
 * The organisms have to be able to adapt in their environment as soon as they can so that way in the end they don’t die. They have to get used to the way of life there so they know how to live there. They find their places they need to be able to protect themselves, and how to be able to get food. That is why they have to react as soon as they can to the new environment. **

4. How are the same design features found in the parts of the cell as well as in other organisms and the environment?
 * The features of the critters in a certain area would most likely match the other critters at that habitat so that way they all “live by the same rules” in other words they all go and do the same things that way one thing most likely wouldn’t kill another thing. **

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 * Question: What is the juice that comes from the Pancreas called?**
 * Answer: Pancreatic Juice**