13-AP-micromuscle-HO

13-AP-micromuscle-HO - -1 to 40 m in diameter Human Anatomy...

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Muscle: Microanatomy Muscle Muscles are organs that either: - move bones and are found lying alongside & attached to bones - move hollow organs and are found embedded in the walls of hollow organs As organs, muscles consist of: - connective tissue - blood vessels - nerves - muscle tissue Muscle Fibers (= muscle cells) - shape - contractile - conductive Myofibrils Myofilaments - thick filaments (myosin) - thin filaments (actin) Sarcolemma Sarcoplasm Muscle 1 2 3
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Muscle Muscle Tissue - striated muscle (skeletal muscle) - cardiac muscle - smooth muscle Smooth Muscle Structure Arrangement of Fibers - fascicles - sheets Contraction Smooth Muscle 4 5 6
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Striated Muscle Fibers - 1 to 40 mm in length
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Unformatted text preview: -1 to 40 m in diameter Human Anatomy & Physiology Striated Muscle Myofibrils Myofilaments-thin filaments (actin)-thick filaments (myosin) Sarcomere-z-line-I-band-A-band Human Anatomy & Physiology Striated Muscle Sarcomere-contraction 7 8 9 Human Anatomy & Physiology Striated Muscle Sarcoplasmic Reticulum-calcium ions (Ca +2 )-transverse tubules (T-tubules)-lateral sacs-triad Human Anatomy & Physiology Arrangement of Fibers-fascicles (A) Connective Tissue-endomysium (B)-perimysium (C)-epimysium (D) Contraction Striated Muscle tendon D B C fiber A muscle Human Anatomy & Physiology Striated Muscle Organization & Contraction 10 11 12 Human Anatomy & Physiology Cardiac Muscle Intercalated Discs Contraction-Purkinje fibers 13...
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13-AP-micromuscle-HO - -1 to 40 m in diameter Human Anatomy...

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