1AnnouncementsNo plant of the week next weekMidterm – Thursday BRING SCANTRON (green one)Section next week – meet in greenhouse, directionson the website soonReview sheet and quiz was posted on web on Friday nightUse the chapter tests under chapter contents to studyNeed to fill out Instructor evaluations for me at end ofclassStarting next week:Dr. Ingrid ParkerPlant ecologistExcellent teacher!Upcoming Assignment –Writing a page on the physiology of a disease.Plant or animal – you will pick from a list of diseases we give you. Will post this in a few weeks…Dr. Parker will let you know more about it.CHAPTER 49 - LOCOMOTION AND THE MUSCULAR-SKELETAL SYSTEMTypes of SkeletonsTypes of MusclesSliding Filament Theory of ContractionKey ConceptsA. Hallmark Of AnimalsB.Costs Energy (ATP)LocomotionAnimals Expend Energy To Overcome Gravity And Friction
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2Locomotor Function•Important Relationship Between The Skeleton And Muscle•Skeleton1.Support– Resist Gravity2.Protect– Cover Vital Organs3.Movement– Critical Framework For Working Skeletal Muscle•MuscleSkeleto-Muscular Movement• Skeletons provide attachment sites for muscle and support of soft tissues¾Bones of the hard endoskeletons of vertebrates swivel, hinge, or pivot¾Pairs of muscles work in opposition to move bones back and forthSkeleton •Structure or structures that serve one or more functions related to support, protection, and locomotion•3 types1.Hydrostatic - cnidarians, earthworms2.Exoskeleton - arthropods3. EndoskeletonSkeleton 1.Hydrostatic - cnidarians, earthworms2.Exoskeleton - arthropods3. EndoskeletonSkeletonJoints – 3 typesBall and socket –hip shoulder; allow for RotationHinge – knee, elbowPivot - elbowSkeletal Muscle ArchitectureDesigned for transferring chemical energyinto mechanical workWhy Me?