Earthworm Body

The large intestine absorbs water intake in the diet and converts the food into faeces that then move into the rectum,

4. Locate the clitellum (copulatory organ); this structure is closest to the anterior of the earthworm.

3. Name the structure that is a double fold of peritoneum and holds the small intestine to the

C. What is the function of the ureter? How does the structure support this function?

First of all, the human body, crayfish, earthworm, and frog all have many similarities and differenced about how their digestive system works. They all eat their food through their mouths and the food then travels into the esophagus. The esophagus prepares the food for further digestion. The food in the esophagus then travels in the frog, crayfish, and human body’s stomach. The earthworm doesn’t have a stomach, but it has a crop that serves as a storage stomach. Once the food is in the stomach, something different happens for each organism. The food in the crayfish travels to the digestive gland which produces digestive substances and from which the absorption of nutrients occurs. The same thing occurs in a frog and the human body, but instead of a digestive gland it is moved into a small intestine. In the earthworm, the food goes from the stomach to the gizzard, which uses stones that the earthworm eats to grind the food completely. After it is moved into the digestive gland, small intestine, or gizzard, the food is mostly digested. The earthworm and human body’s food is now moved into the larger intestine, where it absorbs water and any remaining nutrients. The frogs food is stored in something like a large intestine, but it is called the gallbladder. The crayfish only has on intestine. After going through all this, the undigested material leaves through the anus, or for a frog, it is called the cloaca.

2. The structures in the epigastric region share a common nerve supply. Can you name the specific cranial nerve that serves this region and the part of the nervous system to which it belongs? (1 point)

Lysosomes – Lysosomes act as the digestive system of the cell. They are found in all parts of the cell. There are very powerful enzymes within lysosomes.

Our mouth, esophagus, stomach, pancreas, liver, gallbladder, large intestine, small intestine, rectum, and anus come together to form the digestive system which breaks down our food into simpler molecules. The food enters through the mouth, travels down the esophagus, breaks down in the stomach, pancreas, liver, and gallbladder and then moves through the intestines down to the rectum and anus. A pig’s digestive system is no different than a human’s. A foregut, midgut, hindgut, and a digestive gland form the digestive system of a crayfish. The foregut contains the stomach (partially breaks the food down), the

4. A tract in the spinal cord would most likely be found in the white matter.

species group. The location of this earthworm was in Australia, where they claimed their habitat

When society thinks about crayfish and earthworms they become extremely curious about how their bodies operate because of how they are made up. I will give a brief synopsis of both animals before going into major detail about them. According to the online website named dictionary.com, it says that an earthworm is a burrowing annelid worm that lives in the soil. Earthworms play an important role in aerating and draining the soil and in burying organic matter (Dictionary). Crayfish are nocturnal freshwater crustacean that resembles a small lobster and inhabits in streams and rivers (Dictionary). Crayfish and earthworms are some very interesting animals that possess some exclusive qualities both similar and different.

What are the three sections of the large intestine and what roles does each play in digestion or absorption?

Consist of oral cavity, esophagus, gallbladder, liver, stomach, duodenum, pancreas, colon, cecum, appendix, jejunum, and rectum.

The hypothesis was not supported by the data. When given 2g of cucumber, white potato, and carrot slices, the mealworms did not favor eating a cucumber in comparison to the other vegetables regardless of the higher content of water. While analyzing the data, it was found that the standard error bars of the cucumber data went from 1.85g to 1.89g and the white potato data went from 1.86g to 2.14g which meant that the true means of both of them overlap making that comparison and data statistically insignificant. Also, the white potato data’s true mean ranged from 1.86g to 2.14g and the carrot data’s true mean ranged from 1.91g to 2.03g, making that comparison also statistically insignificant. However, one thing that

In a cricket the reproductive system and the digestive system are interconnected. In a female cricket, the digestive system is located right under the ovaries. The location of these two systems is ideal for providing nutrients to the offspring. If the reproductive system was located elsewhere, access to vital nutrients needed to produce healthy offspring might not be easily available. In an earthworm, the nervous system and the muscular system are interconnected. The nerve cord that runs along the side of the worm’s body contain ganglia. Ganglia send electrical signals to the earthworm’s muscles signaling them to contract. Once the circular muscles receive these signals, the muscles contract and allow the worm to push its body forward.