http://www.teachengineering.org/view_lesson.php?url=collection/cub_/lessons/cub_human/cub_human_lesson05.xmllessontext/xmlIntegrated Teaching and Learning Program, heartarteriesveinsbloodcirculatory systemhuman bodyastronautspaceAortic ValveArteriesAtriumBPMCardiac MuscleCirculatory SystemHeartHemoglobinLungsMitral ValvePlasmaPlateletsPulmonary ValveRed Blood CellsTricuspid ValveUreaVeinsVentricleWhite Blood Cell

This lesson describes how the circulatory system works, including the heart, blood vessels and blood. Students learn about the chambers and valves of the heart, the difference between veins and arteries, and the different components of blood. This lesson also covers the technology engineers have developed to repair the heart if it is damaged. Students also understand how the circulatory system is affected during spaceflight (e.g., astronauts lose muscle in their heart during space travel).

Engineers continue to help protect the heart by developing technological devices to repair it. Artificial heart valves made of metal were developed to replace faulty valves (e.g., valves that do not fully close, which allows blood to flow in the wrong direction). NASA engineers used the technology that the fuel pumps in the Space Shuttle were based on to help design a tiny ventricular assist pump (which helps pump blood through the body). Artificial hearts were developed by engineers to keep hospitalized patients alive while they are waiting for a heart transplant. Engineers are currently working on creating completely internal, artificial hearts. Understanding the circulatory system is also important in order for engineers to keep astronauts healthy during spaceflight (e.g., to help prevent the heart from losing muscle mass during space travel).Explain the function of circulatory system.Describe the heart as a pump.List some devices that engineers have created to help the heart.Describe how spaceflight affects the circulatory system. 15TeachEngineering.orgJessica ToddJulie MarquezSara BornTeresa EllisDenali LanderMalinda Schaefer ZarskeJanet Yowellhttp://www.teachengineering.org/collection/cub_/lessons/cub_human/cub_human_lesson05_kwlchart.pdfhttp://www.teachengineering.org/collection/cub_/lessons/cub_human/cub_human_lesson05_kwlchart.dochttp://www.nasa.gov/audience/forstudents/5-8/features/F_When_Space_Makes_You_Dizzy.htmlCarnegie Mellon, The Quest for Artificial Blood, “To the four million Americans who receive transfusions annually, a shortage of blood is a matter of life and death,” January 2001, http://www.cmu.edu/news/news_stories/01stories/01_blood.html, accessed May 10, 2006.http://dictionary.reference.com/search?q=ureahttp://www.fi.edu/biosci/preview/heartpreview.htmlhttp://www.epa.gov/nerlesd1/chemistry/ice/48aasms.htmhttp://www.nsbri.org/HumanPhysSpace/http://www.nlm.nih.gov/medlineplus/ency/article/002954.htmhttp://www.sti.nasa.gov/tto/shuttle.htmParker, Steve. How the Body Works, London: Dorling Kindersley Limited, 1994.http://www.nhlbi.nih.gov/health/dci/Diseases/hhw/hhw_whatis.htmlhttp://www.4girls.gov/body/body_tool2.htmhttp://www.fda.gov/cdrh/mda/docs/p030011.htmlhttp://www.fda.gov/oc/opacom/kids/html/artificial_heart.htmhttp://en.wikipedia.org/wiki/HemoglobinS11417F6International_Technology_Education_Association-ITEA_STL_StandardsTechnologyE. Technological advances have made it possible to create new devices, to repair or replace certain parts of the body, and to provide a means for mobility. 35S11416E7International_Technology_Education_Association-ITEA_STL_StandardsTechnologyF. A subsystem is a system that operates as a part of another system. 35S1142559ColoradoScienceb. Analyze and interpret data to generate evidence that human systems are interdependent 55S114255AColoradoSciencec. Assess further scientific explanations regarding basic human body system functions 55United StatesCopyright 2012 - Integrated Teaching and Learning Program, College of Engineering, University of Colorado at Boulderhttp://www.teachengineering.org/policy_ipp.phphttp://www.teachengineering.org/2011-03-305Teacher