Body System Interaction Scenario Cards Scenario 1 Scenario 2 Scenario 3 The bell rings at the end of class and you jump up to head for the door. When you stand up, you feel light-headed. What happens in your body to keep you from continuing to feel light-headed? You leave your house in a hurry one morning without your jacket. While you are waiting for the bus, you are freezing! What happens in your body to keep you warm? You are running around all day planning for your school’s homecoming. You realize that you forgot to eat lunch and grab a candy bar. What happens in your body to regulate the sugar intake? Scenario 4 Scenario 5 Scenario 6 You have entered the annual Turkey Dash 5K race. Halfway through, your muscles are burning and you felt as if your legs were going to give out. What happens in your body to help you get to the finish line? You played hard in PE today and didn’t get a chance to rehydrate after class. You feel tired and sluggish. How does your body regulate your dehydration? You are at the movies and begin to feel unusually warm and your hands are “clammy”. Every sip of Coke burns your throat. After visiting Urgent Care, the doctor informs you that it is strep throat. What happens in your body to fight the infection? Scenario 7 Scenario 8 You are quickly walking down the stairs trying to get to your next class. You trip and fall in front of other students. Your face becomes flush with embarrassment, you begin to sweat, and you can feel your heart beating faster. What system interactions brought about this response? Scenario 9 On Friday, you play Xbox Kinect Dance Central 2 through the night. The next morning you try cutting the grass but your arms, legs, and back ache. You are “in a fog” and forget to add gas to the lawn mower, your vision is blurry, and you are somewhat irritable. What happens in your body to recover from sleep deprivation? Scenario 11 Scenario 12 You are a mountain climber exploring the high mountain peaks of the Andes Mountains in remote Argentina. As you near a summit, every step you take requires all your focus; your chest and lungs feel as though they are burning from the challenge of climbing higher. What happens in your body to maintain stability under extreme physical exertion at high altitudes? Upon returning to school after the summer break, you notice that the student whose locker is next to yours looks different. He is taller, has grown a small mustache, speaks with a deeper voice, and looks as though he could be in a body building competition. What happened in his body to create these physical changes? You eat a chicken nugget meal from Chick-Fil-A. What processes must occur to enable biomolecules from the food to be transported to the cells of the body for energy? Scenario 10 You are walking in the woods and stumble across a bloody, disfigured human body (not really…you saw this on C.S.I.). You turn away to run, but instead you vomit, and are aware of a threatening urgency of the bowels. You slump in a faint. What happened in your body to cause these extraordinary reactions? Body System Interaction Scenario Cards - Partner Activity You and your partner will work together to do the following: You must choose 4 out of the 12 given scenarios. For each scenario: 1. List each body system that is at work. You must explain how the body system is functioning and the main organs that the body system is using. In your explanation, explain how various body systems and organs are working together. 2. List any body system that might be suppressed. Explain why. 3. Is this an example of positive feedback or negative feedback? Explain why. Example Scenario: You are a deep sea diver who loves the thrill of diving in deep waters to explore sunken treasures. You are careful to follow all the rules of diving including monitoring how much air you have in your tank and how long you can stay deep down. Without warning, your gauges fail, leaving you without information about the air in your tank. What is happening in your body to help you survive? 1. Nervous-Various parts of the brain are controlling the rate of respiration, movement of muscles and bone, and decision making about what the body should do. The brain stem is regulating respiration (respiratory system) so that they body can maintain proper oxygen levels in the body. The cerebrum is moving the muscles of the muscular system and bones of the skeletal system so that the body can swim to the surface of the water. The cerebellum is working to control your decision making process. Respiratory-The lungs are ridding the body of carbon dioxide and bringing in oxygen. The brain stem of the nervous system senses an increase in carbon dioxide, sends a signal to the diaphragm to contract, which forces the lungs to expand and oxygen to enter the alveoli of the lungs. Circulatory-The capillaries, surrounding the alveoli in the lungs (respiratory system), are absorbing oxygen and sending oxygenated blood through the pulmonary vein back to the heart. Then the heart pumps oxygenated blood to the body so that they body has the ability to swim to the surface. Muscular-The muscles are moving the bones of the skeletal system so you can swim to reach the surface. Skeletal-The bones are being moved by the muscles of the muscular system so that you can swim to reach the surface. Endocrine-The adrenal gland is producing the hormone adrenaline which triggers the body’s response to this sudden stress. The brain of the nervous system is controlling the release of this hormone. 2. Digestive system. Adrenaline production decreases the activity of the digestive system. 3. Negative feedback. Your respiratory and circulatory systems are working together to exchange carbon dioxide and oxygen to maintain an equal balance of both in the in the body.