Relacionar Columnas The Muscle SystemVersión en línea Students use this game to review material learned from the Muscle System in Anatomy & Physiology. por Sherri Grosso 1 A-band 2 Z-line 3 This is the neuromuscular junction where a nerve impulse reaches a sarcolema. 4 Myosin- These molecules have a club-shaped head that will extend toward and bind to another binding site to pull the muscle together. 5 6 7 The neurotransmitter responsible for muscle contraction, since it will be released into the synapse. 8 Cardiac Muscle 9 10 11 Smooth Muscle 12 The electrical current generated by the reversal of charge across the muscle cell membrane, which causes the muscle to contract. 13 14 Skeletal Muscle 15 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 - 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 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 Action Potential 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. The interaction between actin and myosin filaments in this area of the sarcomere is responsible for the muscle contraction. Tendon- a fibrous connective tissue that connects a muscle to a bone. Calcium A dark thin protein band to which actin filaments are attached in a striated muscle fiber, marking the boundaries between adjacent sarcomeres
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