3. THE STRUCTURAL HIERARCHY OF THE SKELETAL MUSCLE Image from: http://academic.kellogg.cc.mi.us/herbrandsonc/bio201_McKinley/f10-1a_structural_organ_c.jpg
4. SLIDING FILAMENT THEORY Image from: http://www.octc.kctcs.edu/GCaplan/anat/Notes/API%20Notes%20J%20%20Muscle%20Contraction.htm
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7. THE NEUROMUSCULAR JUNCTION CNTD. Image from: http://www.octc.kctcs.edu/GCaplan/anat/Notes/API%20Notes%20J%20%20Muscle%20Contraction.htm