Muscle Tissue

by Geoffrey Meyer, PhD

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    In this lecture, I am going to talk about the structure and function of muscle tissue. Now muscle tissue is specialized for movement. Many cells in the body can move and I have mentioned before during connective tissue descriptions that a lot of wandering cells from the blood move through connective tissue. So they can move because they have contractile proteins within them, but movement is not their specific function. Their function is to undergo surveillance in tissues and look for foreign antigens and pathogens. But muscle tissue is specifically designed for movement. When we go through this lecture, I am going to explain how to distinguish between skeletal muscle, cardiac muscle and smooth muscle. And in doing so, I am also going to explain that each of these three different types of muscle are innervated in different ways. In other words, different stimuli cause them to contract. It is also important to understand how muscle particularly skeletal muscle is wrapped up or covered, supported by connective tissue. Most of this lecture really talks about skeletal muscle because, in subsequent lectures, I will then emphasize the structure and function of smooth muscle and also cardiac muscle. When we look at skeletal muscle, there are different sorts of fibre types and it is important that you understand each of those fibre types and their function, their special role. One of the basic components of skeletal muscle is the sarcomere. It is the functional unit of contraction and it is very important to understand the structure of that as well, although a lot of the structure and function of the sarcomere is at the molecular level. And therefore it is really a very physiological description that is needed. I am going to emphasize mostly the structural appearance of the sacromere. I am...

    About the Lecture

    The lecture Muscle Tissue by Geoffrey Meyer, PhD is from the course Types of Tissues. It contains the following chapters:

    • Muscle Tissue
    • How is muscle tissue classified?
    • Organization of a skeletal muscle fibre
    • The Sarcomere
    • Innervation of a skeletal muscle fibre
    • How does muscle repair after injury?

    Quiz for lecture

    Test your knowledge with our quiz for lecture Muscle Tissue.

    1. Smooth muscle
    2. Skeletal muscle
    3. Cardiac muscle
    1. fast glycolytic fibres
    2. slow oxidative fibres
    3. fast oxidative glycolytic fibres
    4. slow twitch fibres
    5. suitable for middle distance running events
    1. Multi-nucleated central nuclei
    2. Sarcoplasmic reticulum
    3. Sarcolemma
    4. Myofibrils
    5. Multi-nucleated peripheral nuclei
    1. one Z line and another
    2. one A band and another
    3. one M line and another
    4. one I band and another
    5. one H band and another
    1. 1 micrometre
    2. 2 micrometres
    3. 2.6 micrometres
    4. 3 micrometres
    5. 4 micrometres
    1. A band changes
    2. H band changes
    3. I band changes
    4. between the z lines changes
    5. M line remains the same
    1. stores potassium ions
    2. stores calcium ions
    3. is part of the sarcoplasmic reticulum
    4. is intimately associated with the sarcolemma of the muscle fibre
    5. is intimately associated with each myofibril
    1. muscle fibres innervated by a single axon
    2. nerve fibres innervating a muscle bundle
    3. muscle fibres comprising a muscle fascicle
    4. myofibrils comprising a single muscle fibre
    5. motor endplates (neuromuscular junctions) on a single muscle fibre

    Author of lecture Muscle Tissue

     Geoffrey Meyer, PhD

    Geoffrey Meyer, PhD

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    Thank you so much …
    By Sahar A. on 23. May 2016 for Muscle Tissue

    Thank you so much for this amazing lecture Professor Meyer.