2010_Lectorial_Sem 2_Full version_6B&W

2010_Lectorial_Sem 2_Full version_6B&W - Types of...

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1 Lectorial BIOL1040 May 2010 Skeletons; Skeletal Muscle; Locomotion Prof. Mike Bennett m,.bennett@uq.edu.au 417 Otto Hirschfeld (B81) Can muscles contract without causing movement at the joint? 1. Yes 2. No Types of Muscle Contraction Isotonic = tension remains unchanged, but there is a change in length • Concentric (shortening) • Eccentric (lengthening) • Isometric (length stays same) Which of the following is not true with respect to vertebrate skeletal muscle? 1. Calcium ions are released into the muscle fibre’s cytosol from sarcoplasmic reticulum 2. The ‘A-band’ within a sarcomere represents the length of myosin myofilaments 3. Muscle fibre force production is independent of sarcomere length 4. After the effect of a muscle fibre action potential ends Ca 2+ is actively transported out of the cytosol 5. In the ‘power stroke’ the actin filaments are moved towards the centre of a sarcomere The ability to generate tension also depends on muscle fibre length
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2 ….and upon length of tendons
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This note was uploaded on 10/25/2011 for the course BIOL 1040 taught by Professor Assocproflesleylluka during the Two '10 term at Queensland.

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2010_Lectorial_Sem 2_Full version_6B&W - Types of...

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