Slide 1 Muscle Tissue Function: specialize in contractions for movement; voluntary (walking, speech) and involuntary (pushing materials through the body). http://www.bing.com/videos/search?q=muscle+contraction&qpvt=muscle+contraction&FORM=VDRE#view=detail&mid=8A163880394EE06E3A578A163880394EE06E3A57…