Notes_for_Posting_Chapter_49

Notes_for_Posting_Chapter_49 - Announcements No plant of...

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1 Announcements No plant of the week next week Midterm – Thursday BRING SCANTRON (green one) Section next week – meet in greenhouse, directions on the website soon Review sheet and quiz was posted on web on Friday night Use the chapter tests under chapter contents to study Need to fill out Instructor evaluations for me at end of class Starting next week: Dr. Ingrid Parker Plant ecologist Excellent 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 SYSTEM ± Types of Skeletons ± Types of Muscles ± Sliding Filament Theory of Contraction Key Concepts A. Hallmark Of Animals B. Costs Energy (ATP) Locomotion Animals Expend Energy To Overcome Gravity And Friction
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2 Locomotor Function Important Relationship Between The Skeleton And Muscle Skeleton 1. Support – Resist Gravity 2. Protect – Cover Vital Organs 3. Movement – Critical Framework For Working Skeletal Muscle Muscle Skeleto-Muscular Movement • Skeletons provide attachment sites for muscle and support of soft tissues ¾ Bones of the hard endoskeletons of vertebrates swivel, hinge, or pivot ¾ Pairs of muscles work in opposition to move bones back and forth Skeleton Structure or structures that serve one or more functions related to support, protection, and locomotion 3 types 1. Hydrostatic - cnidarians, earthworms 2. Exoskeleton - arthropods 3. Endoskeleton Skeleton 1. Hydrostatic - cnidarians, earthworms 2. Exoskeleton - arthropods 3. Endoskeleton Skeleton Joints – 3 types Ball and socket – hip shoulder; allow for Rotation Hinge – knee, elbow Pivot - elbow Skeletal Muscle Architecture Designed for transferring chemical energy into mechanical work Why Me?
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Skeletal Muscle Architecture Designed for transferring chemical energy into mechanical work Why Me? This means ATP and a bunch of protein allows animals to: This means ATP and a bunch of protein allows animals to: Run, Swim, Fly, Climb, Hop, Dig, Rattle, Write, Blink, Scratch, Jump, Soar, Wink, Laugh, Sip, Etc., Skeletal Muscle Architecture Designed for transferring chemical energy into mechanical work Locomotor Function Important Relationship Between The Skeleton And Muscle Skeleton Muscle 1. Cardiac – non-voluntary 2. Smooth - non-voluntary – intestines, arteries 3. Skeletal – voluntary, provides power for movement Remember… Skeletal muscle structure • Muscle is a grouping of cells (muscle fibers) bound together by connective tissue • Ligaments link bones to bones or bones or to cartilage • Tendons link bones to skeletal muscle • Skeletal muscle fibers increase in size during growth but no new fibers are formed How muscles move bones How muscles move bones Muscle shortens
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This note was uploaded on 04/06/2008 for the course BIO 20b taught by Professor Dunkin&parker during the Winter '08 term at University of California, Santa Cruz.

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Notes_for_Posting_Chapter_49 - Announcements No plant of...

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