Arthropoda is a phylum which consists of invertebrate animals or “arthropods”. Arthropods have segmented or jointed bodies that have an external or exo-skeleton. This phylum happens to be the largest and longest lasting in the animal kingdom. The digestive systems of each organiusm in the Arthropoda phylum are each complex and different in their own ways.
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Brachyura (crab)
The Brachura or crab is a crustacean that can be found on beaches and in ocean around the world. There are many different types of Brachyura, but each has the same type of digestive system. The digestive system of this organism is similar to that of many other animals. The crab uses its mouth and claws for processing its food. The food then goes to the esophagus which then leads to the stomach. In the stomch, there is a chamber called the gastric mill where most of the digestion of the food happens. Nutrienst found in the food get filtered through the hepatopancreas, also known as the midgut gland. The midgut gland abosorbs these nutrienst and gets rid of the particles too large to be filtered which are then excreted through the crab’s body.
The Brachura or crab is a crustacean that can be found on beaches and in ocean around the world. There are many different types of Brachyura, but each has the same type of digestive system. The digestive system of this organism is similar to that of many other animals. The crab uses its mouth and claws for processing its food. The food then goes to the esophagus which then leads to the stomach. In the stomch, there is a chamber called the gastric mill where most of the digestion of the food happens. Nutrienst found in the food get filtered through the hepatopancreas, also known as the midgut gland. The midgut gland abosorbs these nutrienst and gets rid of the particles too large to be filtered which are then excreted through the crab’s body.
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Araneae (spider)
The Araneae, or the spider, is another organism of the Arthropoda phylum. It is an eight legged arachnid with and unsegmented body that is made up of a head, a thorax, and its abdomen. The spider is a predatory animal, meaning, it hunts for its food. The digestive system of the spider may vary in the beginning, but unom in their fangs, and others trapped their prey in webs they create and cover or inject the prey with enzymes which make it easier to consume. After this, the food goes through the mouth which leads to a narrow passage called the pharynx. This leads to the stomach or the midgut where nutrients and other particles are filtered. There are usually four pairs of midgut extensions throughout the spiders body so that nutrients can be filtered and spread properly. Just like the crab, particle too large to be filtered are excreted from the body.
The Araneae, or the spider, is another organism of the Arthropoda phylum. It is an eight legged arachnid with and unsegmented body that is made up of a head, a thorax, and its abdomen. The spider is a predatory animal, meaning, it hunts for its food. The digestive system of the spider may vary in the beginning, but unom in their fangs, and others trapped their prey in webs they create and cover or inject the prey with enzymes which make it easier to consume. After this, the food goes through the mouth which leads to a narrow passage called the pharynx. This leads to the stomach or the midgut where nutrients and other particles are filtered. There are usually four pairs of midgut extensions throughout the spiders body so that nutrients can be filtered and spread properly. Just like the crab, particle too large to be filtered are excreted from the body.
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Chilopoda (centipede)
The Chilipoda or the centipede is an invertebrate that has a flattened and elongated body with numerous legs. The centipede is also a predator and hunts for prey that are smaller than itself such as insects. The digestive system of this organism is found in the abdomen and consists of three parts; the foregut, the midgut, and the hindgut. When food is first consumed, it goes to the foregut, where food is stored and or broken down into smaller parts. Then these smaller parts go to the midgut, where these parts are digested even more and nutrients are absorbed. In the hindgut, the particles that were not absorbed were released as waste.
The Chilipoda or the centipede is an invertebrate that has a flattened and elongated body with numerous legs. The centipede is also a predator and hunts for prey that are smaller than itself such as insects. The digestive system of this organism is found in the abdomen and consists of three parts; the foregut, the midgut, and the hindgut. When food is first consumed, it goes to the foregut, where food is stored and or broken down into smaller parts. Then these smaller parts go to the midgut, where these parts are digested even more and nutrients are absorbed. In the hindgut, the particles that were not absorbed were released as waste.