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LEARNING OUTCOMES: •Explain what a cell, tissue, organ, body system and organism are •Name 5 body systems •Explain the role of each system Living things are made up of organized systems too. Each specific cell is grouped with other cells similar in structure and function to form tissues and ultimately organs. Cells are the basic units of life. cell Groups of cells work together to form tissues. tissue Groups of tissues work together to form organs. organ Cells are the simplest u___. unit tissue - like LOTS of cells work together to make a t______ muscle. tissues working together make an o_____ LOTS of t_______ organ like the heart. Similar tissues and organs work together to make a system – like the d_______ digestive system These systems work together to create an o__________ (like a human) organism Cell Tissue Organ Systems Organism ______ -> ______ -> ______ -> ______ -> ______ 1. Name of Body System 2. Function of system 3. Organ / body parts involved Digestive System Breaks down food into smaller molecules so they can be absorbed into the blood stream. Respiratory System Brings oxygen into the body from the air. Removes carbon dioxide from the body. Mouth, Stomach, Oesophagus (gullet), Pancreas, Liver Small & Large intestine, Rectum, Anus Lungs, windpipe, bronchus, bronchioles, air sacs, diaphragm, nose and mouth, ribcage Circulatory System Transports oxygen and nutrients to body cells and carries away waste products. Heart, arteries, veins, blood capillaries Reproductive System Produces sex cells (sperm and eggs). Nurtures the unborn baby (foetus). Testes, Vagina, Egg, Sperm Duct, Uterus, Sperm Oviduct, Ovary, Penis 1. Name of Body System 2. Function of system 3. Organ / body parts involved Skeletal System Provides shape and structure to the body. Allows for movement. Protects vital organs. Skull, ribcage, vertebra, bones, ligaments Urinary System Cleanses the blood. Rids the body of wastes. Maintains salt and water balance. kidneys, bladder, urethra, ureter Muscular System Allows for movement of the body. Keeps head in position. Provides heat. Muscles, tendons, ligaments Nervous System Receives incoming information (senses). Sends messages to the body about how to react. Brain, nerves, senses, spinal cord