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ORGAN SYSTEMS IN MAMMALS The bodies of mammals are complex and contain many separate structures called organs. Each organ has one or more functions which it is specialised to carry out. The organs work together in organ systems which carry out the main functions of the living organism. Use a whole page (sideways) to make a table about the organ systems of mammals. Have three columns, and fill in the seven systems as below. System Circulatory Function Organs in the system Reproductive Excretory Respiratory Digestive Skeletal / Muscular Nervous The seven functions are as follows – put them in the correct places in the table. To To To To To To To obtain oxygen and remove carbon dioxide get rid of wastes made by the body control response to changes in the surroundings produce the next generation support the body and allow movement make food into small molecules and take them into the blood transport substances around the body Here is a list of organs – you must put them in the right space in your table. You may find there are one or two which go in more than one system. Arteries Ears Kidneys Nasal cavity Spinal cord Tongue Bladder Eyes Liver Nerves Stomach Uterus Bones Heart Lungs Ovaries Teeth Veins Brain Intestines Muscles Ribcage Testes Trachea