Cell Systems And Their Function - 1461 Words

Introduction Systems and their function: All living things must obtain and use nutrients, get rid of waste, interact with their environment, and perform other processes in order to live. The complexity of an organisms will determine the way the organisms will carry out these processes. Unicellular organisms are organisms containing only one cell such as bacteria and some algae. These types of organisms performs all of the process necessary for life using only a single cell. Multicellular organisms, on the other hand, are organisms that consists of more than one cell. These type of organisms require organ systems to carry out the life process. Organ systems are group of anatomical structures that work together to perform a specific†¦show more content†¦Muscular System 3. Skeletal System 4. Nervous System 5. Circulatory System 6. Lymphatic System 7. Respiratory System 8. Endocrine System 9. Urinary/Excretory System 10. Reproductive System 11. Digestive System 12. Immune System All these organ system rely on each other in order to function properly. If even one organ system fails to works properly, the organism could lead to severe disability or even death. (Study, 2015) The circulatory, digestive, and respiratory are three main organ systems discussed in this lab report. The digestive system are the collection of organs that work together to break down food into nutrients so that it can be absorbed into the blood. This systems consists of four main steps which include ingestion, digestion, absorption, and egestion. The mouth is responsible for carrying out the first step which is taking in the food. The salivary glands, pharynx, esophagus, and the teeth are responsible for the second step as they are responsible to break down the complex food molecules into smaller molecules. The absorption of the food is done by the stomach, the liver, the gall bladder, and small intestines. These organs are responsible for absorbing the digested nutrients and transporting them to the bloodstreams. Finally, the last step, the egestion, is done by the large intestine, rectum, and anus. These organisms are responsible to remove the waste food materials from the body. The circulatory system, also called the