The swallowed good moves down wards in the alimentary canal because of
Answers
Answer:
Answer is (d) the contraction of muscles in the wall of food pipe. Explanation: Muscles of Esophagus pushes food down by movement of the wall of the foodpipe. Actually this movement takes place throughout the alimentary canal and pushes the food downwards.
Answer:
Because to digest the swallowed food to form simpler substance, so that the body can utilise nutrients from it.
Explanation:
Every organism which follows holozoic form of nutrition must have a digestive system. Here, organism take in complex food materials, processes it and transform it into simpler substances. Our body can not synthesise nutrients directly from complex food substances, therefore, the complex food needs to be broken down into simpler substance, so that the body can synthesise nutrients from it and can obtain energy from it. The alimentary canal is a part of the digestive system. It opens into stomach through a small opening called sphincter muscle. In stomach, different gastric juices act on the food to convert it into simpler substance. However, the complete digestion of food does not complete in stomach. The semi-digested food then opens into the small intestine. The intestinal juices then acts on the semi digested food and converts into fully digested food. Thus, complete digestion of food occurs in the small intestine. Then it is absorbed by the villies present in the inner lining of the small intestine, and reaches to different body cells through blood vessels, where further respiration takes place, to obtain energy. The left out food material is passed to the large intestine, where absorption of most of the liquid takes place. The remaining (almost) solid waste is thrown out off the body through rectum and anus. This the the complete digestion process in short.