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STRUCTURES ASSOCIATED WITH A SKELETAL MUSCLE Introductory Questions Where is skeletal muscle found in your body? Attached to bone. (Smooth muscle lines organs, and cardiac muscle is found in the heart.) What is the function of skeletal muscle? Voluntary movement Stability (posture) Communication (facial expression, speech) Control of body openings Heat production- 85% of body heat is generated by muscles providing the proper environment for enzymes and therefore metabolism Word Parts/Meanings Fascia- band or bundle Epi-upon Peri- around Endo- inner Mys- muscle Sarco-flesh Lemma- husk Structures of a skeletal muscle fiber A Sarcomere Twizzler analogy Many packages of Twizzlers = Fascicle Find a Fascicle on your diagram. Twizzler analogy 2 1 package of Twizzlers = Muscle fiber The packaging = Sarcolemma Twizzler analogy 3 1 bundle of twizzlers = myofibril Twizzler analogy 4 1 Twizzler strand = Filament Compare the Muscle Fiber to Pull and Peel Twizzlers How amazing is that?
