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 Myosin- These molecules have a club-shaped head that will extend toward and bind to another binding site to pull the muscle together. 2 Cardiac Muscle 3 Skeletal Muscle 4 The electrical current generated by the reversal of charge across the muscle cell membrane, which causes the muscle to contract. 5 A-band 6 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 7 8 The neurotransmitter responsible for muscle contraction, since it will be released into the synapse. 9 10 Smooth Muscle 11 Z-line 12 13 14 15 This is the neuromuscular junction where a nerve impulse reaches a sarcolema. 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. - Found only in the heart - Involuntary - Has striations - They are branching chains of cells - Steady, rhythmic contractions 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 Calcium A dark thin protein band to which actin filaments are attached in a striated muscle fiber, marking the boundaries between adjacent sarcomeres This depicts the unit called the sarcomere which is responsible for an individual muscle cell contraction. Acetylcholine - Attached to bones - Voluntary, you control these muscles - Striated - Single, long, cylindrical multi-nucleate cells - Strong, rapid contraction - Not rhythmic Tendon- a fibrous connective tissue that connects a muscle to a bone. Action Potential
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