This lab allows students to participate in a hand-on activity that teaches students about muscle contraction. Students will need basic knowledge of muscle names to conduct this lab. In the lab students will be observing the contraction process at work in various arm & leg muscles.
Lab Purpose: The internal fibers (actin & myosin) that make up a muscles slide together during a muscle contraction. This causes the insertion end of the primary mover muscle to pull on the bone located across the joint. When the fibers come together, the increased overlapping volume of these fibers create the thickening bulge that can be noticed during muscle contraction. This process will be the looked at.
Materials: String, with a knot at one end, and ruler or a tape measure