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Related Flashcards
Cards In This Set
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What is the differance between Skelatal Muscle and Cardiac Muscle?
3 Points each |
Skeletal: Control body movement, controled by somatic motor neuron NOT HORMONES.
Cardiac: Only the heart. Striations (like cardiac). |
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Structure and Function of Smooth Muscles?
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Primary muscle for internal organs, blood vessels. No Striations, influences movement through the body.
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What are the two attachment points for skeletal muscles?
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Origin - Least movable
Insertion - Most movable |
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What are the two/3 types of muscles?
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Flexor - Bring closer together (muscles contract)
Extensor - Bring further apart (muscles contract) Antagonistic - pars of muscles to move in both directions (working against each other) |
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What is the outer connective tissue of the skeletal muscle called?
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Epimysium
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What causes striations in Skeletal and Cardiac muscle?
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The organization of Actin and Myosin.
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Bundles of muscle tissue are called...? and they are covered by......?
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Fascicles, which are covered by the Perimysium (connective tissue sheath)
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Muscle fibers are found within each...?
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Fascicle
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What is the innermost connective tissue sheath called?
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Endomysium (Endo - inside)
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Within each muscle fiber are the functional units of the skeletal muscle! Name these...
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Myofibrils. Muscle fibers contain so many of these, there is little room for anything else.
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Cytosol contains many.....?
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Glycogen granules and mitochondria (ATP synthesis)
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Structure of a muscle fibre, name shape, how many nuclei, what are some key components? What is most of the space of a muscle fibre comprised of?
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Long, cylindrical cell. Made up of hundreds of nuclei on the surface. Contain a cell membrane called Sarcolemma (flesh, Shell). Most space is made up of myofibrils, which contain sarcoplasmic reticulum. and part of the myofibrils are Contractile and Elastic Protein bundles.
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What is the blue colored organelle called? What are the series of branched tubes called?
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Sarcoplasmic Reticulum. T-Tubles (Transverse Tubules), Lumen continuous with ECF.
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Muscle Cell- ________________muscle equivalent
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Muscle Fiber
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Cell Membrane- ________________muscle equivalent
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Sarcolemma
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