Locust Dissection The Aim The aim of this dissection was to observe the gas exchange system of the locust. DIGESTIVE SYSTEM The digestive tract not only aids in obtaining, processing and digesting food molecules - It is the largest endocrine tissue in both humans and insects. It starts with a mouth and ends with the anus.What goes on in between depends on the insect, its life stage and what it eats. digestive system functions to altered the chemical and physical composition of food so that it can be absorbed and used by the body; ie Functions of Digestive System: 1. physical and chemical digestion 2. absorption 3. collect & eliminate nonuseable components of food Human Anatomy & Physiology: Digestive System; Ziser Lecture Notes, 2014.4 2 PRESENTATION ON DIGESTIVE SYSTEM OF INSECT • By M. Furqan.Ali 2. Food is taken in with the beak, which is the perfect tool for pecking feed in crumble or pellet form, small grains, grass or insects. The digestive system is involved in: 1. Let’s take a look at how the poultry digestive system works. Even without teeth, chickens have one of the most efficient digestive systems in the animal kingdom. Around 4,600 cockroaches are living aside human habitats. One of the main parts of the digestive system is the alimentary canal, a tube that runs from the mouth to the anus. Accessory organs such as the liver, pancreas, and gallbladder are also an important part of the digestive system of frogs. DIGESTIVE SYSTEM 3. Obtaining food 2. The specific features we were looking for were: The spiracles, closable holes in the abdomen and thorax of the insect in which oxygen enters the insect; Trachea, ribbed tubules of chitin which are attached to the spiracles Gently separate the reproductive system from the digestive system. The Drosophila intestine is a complex organ consisting of multiple cell types of heterogeneous developmental origin. Caterpillar Anatomy: A Tube for Food - Butterfly anatomy includes a tube-shaped body, a set of mouth parts, a long digestive tract and six legs attached to the thorax. 4. Structure of the Digestive Tract. The major organs involved in the process of digestion in frogs include mouth, pharynx, esophagus, stomach, small intestine, large intestine, and cloaca. The digestive system is just a tube within a surrounding tube called the body. Make incisions along the broken lines as indicated in Figure 22. The Alimentary canal has been divided into three main parts: Foregut Note the genital opening in Figure 22. The digestion of food would take place in the cavities specialized or combined together. Be careful to avoid cutting through the atrium. This incision will detach the entire reproductive system form the rest of the animal (Figure 23). Cockroaches would fall under the category of insects of the Blattodea order. 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