Life Science 1.1 : Body Organization

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Life Science 1.1 : Body Organization

  1. 1. Life Science<br />Human Body Systems and Health<br />
  2. 2. Body Organization and Structure<br />Circulation and Respiration<br />The Digestive and Urinary Systems<br />Communication and Control<br />Body Defenses and Diseases<br />Staying Healthy<br />Table of Contents<br />
  3. 3. Life Science 1.1<br />Body Organization and Structure<br />
  4. 4. Objectives:<br />Describehow tissues, organs, and organ systems are related.<br />List 11 major organ systems.<br />Identify how organ systems work together to maintain homeostasis.<br />Bellringer:<br />Match the body system in the first column with the correct function in the second column:<br />1. respiratory system a. regulates body functions<br />2. muscular system b. breaks down food<br />3. digestive system c. pumps blood<br />4. circulatory system d. absorbs oxygen<br />5. endocrine system e. moves bones<br />
  5. 5. Cells, Tissues, and Organs<br />The many kinds of cells in your body help your internal environment stay stable.<br />Homeostasis <br />The maintenance of a constant internal state in a changing environment.<br />Cells Form Tissues <br />A group of similar cells working together forms a tissue.<br />Your body has four main kinds of tissue.<br />
  6. 6. Tissues Form Organs <br />Two or more tissues working together to carry out a specialized function form an organ.<br />
  7. 7. Working Together<br />Organs Form Systems <br />Organs that work together make up an organ system.<br />Organ systems work together to maintain homeostasis.<br />Your body has 11 major organ systems.<br />Integumentary System<br />Skeletal System<br />Muscular System<br />Cardiovascular System<br />Your skin, hair, and nails protect the tissue that lies beneath.<br />Works with skeletal system to help you mover.<br />Your bones provide a frame to support and protect your body parts.<br />Your heart pumps blood through all of your blood vessels.<br />
  8. 8. Male Reproductive System<br />Urinary System<br />Female Reproductive System<br />Respiratory System<br />Removes wastes from the blood and regulates your body’s fluids.<br />Produces and delivers sperm.<br />Your lungs absorb oxygen and release carbon dioxide.<br />Produces eggs and nourishes and protects the fetus.<br />Nervous System<br />Digestive System<br />Lymphatic System<br />Endocrine System<br />Receives and sends electrical messages throughout body.<br />Breaks down the food you eat into nutrients that your body can absorb.<br />Returns leaked fluids to blood vessels and helps get rid of bacteria and viruses.<br />Send out chemical messages.<br />

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