Excitation Contraction Coupling in Skeletal Muscle Blackboard 2009

Excitation Contraction Coupling in Skeletal Muscle Blackboard 2009

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2/28/2009 1 BIO 203 Cellular and Organ Physiology Professor John Cabot Office: Life Sciences Building, Room 536 Office Hours: Tuesdays, 1-2:30 pm Thursdays, 1-2:30 pm E-Mails: Please include your name and SB ID #. Excitation- Contraction Coupling in Skeletal Muscle
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2/28/2009 2 Muscles Contract Generate motion Generate force Support Muscle Types
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2/28/2009 3 Skeletal Muscle (SR) Skeletal Muscle Anatomy (Cel membrane) (Modified endoplasmic reticulum) 1000/ muscle fiber
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2/28/2009 4 Skeletal Muscle Anatomy (Muscle cell) Approximately 40% of body mass Brachioradialis Skeletal Muscle Anatomy (Cel membrane) (Modified endoplasmic reticulum) 1000/ muscle fiber 1-100 mm in length
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2/28/2009 5 Muscle Fiber Structure 1000 myofibrils / muscle fiber Muscle Fiber Structure
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2/28/2009 6 Skeletal Muscle Anatomy (Cel membrane) (Modified endoplasmic reticulum) 1000/ muscle fiber Actin – „thin filaments” Tropomyosin Troponin Myofibril Structure Regulatory proteins
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2/28/2009 7 Thin Filaments: Actin G (globular) actin polymerizes to form F (filamentous) actin Actin – „thin filaments” Tropomyosin Troponin Myosin – “thick filaments” Myofibril Structure Regulatory proteins
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This note was uploaded on 07/28/2009 for the course BIO 203 taught by Professor Johncabot during the Fall '08 term at SUNY Stony Brook.

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Excitation Contraction Coupling in Skeletal Muscle Blackboard 2009

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