Matching Pairs The Muscle SystemOnline version Students use this game to review material learned from the Muscle System in Anatomy & Physiology. by Sherri Grosso 1 2 Myosin- These molecules have a club-shaped head that will extend toward and bind to another binding site to pull the muscle together. 3 Cardiac Muscle 4 Skeletal Muscle 5 This is the neuromuscular junction where a nerve impulse reaches a sarcolema. 6 A-band 7 This is released from the sarcoplasmic reticulum in response to the change in voltage across the membrane during a nerve transmission through muscle. It binds to troponin so that cross-bridges form between actin and myosin 8 9 The electrical current generated by the reversal of charge across the muscle cell membrane, which causes the muscle to contract. 10 Smooth Muscle 11 12 13 The neurotransmitter responsible for muscle contraction, since it will be released into the synapse. 14 Z-line 15 The interaction between actin and myosin filaments in this area of the sarcomere is responsible for the muscle contraction. Actin- contains binding sites that are covered by regulatory proteins until calcium ions are present to allow a binding molecule to attach itself to it and pull the two molecules past each other. Mostly in walls of hollow, visceral organs NO striations Spindle-shaped cells in sheets or layers Slow, sustained contractions move substances through the organ or along a tract - Attached to bones - Voluntary, you control these muscles - Striated - Single, long, cylindrical multi-nucleate cells - Strong, rapid contraction - Not rhythmic Action Potential Acetylcholine - Found only in the heart - Involuntary - Has striations - They are branching chains of cells - Steady, rhythmic contractions This depicts the unit called the sarcomere which is responsible for an individual muscle cell contraction. Tendon- a fibrous connective tissue that connects a muscle to a bone. A dark thin protein band to which actin filaments are attached in a striated muscle fiber, marking the boundaries between adjacent sarcomeres Calcium
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