Connective Tissue Associated with Muscle Tissue

Connective Tissue Associated with Muscle Tissue - • The...

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Connective Tissue Associated with Muscle Tissue A skeletal muscle consists of numerous muscle cells called muscle fibers. Three layers of connective  tissues surround these fibers to form a muscle. These and other connective tissues associated with  muscles follow:  The  endomysium  is the connective tissue that surrounds each muscle fiber (cell).  The  perimysium  encircles a group of muscle fibers, forming a fascicle.  The  epimysium  encircles all the fascicles to form a complete muscle.  tendon  is a cordlike extension of the preceding three linings. It extends beyond the  muscle tissue to connect the muscle to a bone or to other muscles.  An  aponeurosis  is a flat broad extension of the three muscle linings and serves the  same function as a tendon.  Fascia  is a term for a layer or sheet of connective tissue. 
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Unformatted text preview: • The deep fascia surrounds the epimysium and encloses or lines other nearby structures such as blood vessels, nerves, and the body wall. • The superficial fascia (hypodermis or subcutaneous layer) lies immediately below the skin. The superficial fascia merges with the deep fascia where the surfaces of the skin meet. • Within a myofibril, actin and myosin filaments are parallel and arranged side by side. The overlapping filaments produce a repeating pattern that gives skeletal muscle its striated appearance. Each repeating unit of the pattern, called a sarcomere, is separated by a border, or Z disc (Z line), to which the actin filaments are attached. The myosin filaments, with their protruding heads, float between the actin, unattached to the Z disc....
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