Body Systems and Organization

Watch the video and answer the multiple choice questions that follow. Fill in the blanks Cellsare the smallest units of life. All living things are made up of them. A group of cells is called a tissue . Groups of these then become organs . When we have a number of organs together that do similar jobs, we have an organ system . When the organ systems are all working together we have an organism . Match the body system to it's main function. Respiratory system Bring oxygen in and get carbon dioxide out. Circulatory system Pump blood around the body Digestive system Extract nutrients from the food we eat. Excretory system Remove wastes Skeletal system Protect our body Endocrine system Produce hormones that help with growth and development Nervous system Send messages around the body Which body system produces hormones? Endocrine Nervous digestive Circulatory Which system allows for movement? Digestive Nervous Muscular Immune Which system provides us with the ability to reproduce? Nervous Reproductive Nervous Endocrine Which system has a major role in gas exchange? Respiratory circulatory Digestive Nervous Which system protects and regulates body temperature? Digestive Nervous Integumentary Immune Put the following words in order from smallest to biggest on both sides. Levels of Organization Cells tissues organs organ system organism Examples of the Levels central nervous system nerves spinal cord dog nerve cell