WebWhen acetylcholine is released, it diffuses onto the muscle fiber's sarcolemma and binds to receptors in the motor end plate. This binding initiates a change in ion permeability which results in a graded depolarization of the muscle plasma membrane, or end-plate potential, triggering events that lead to contraction. 3 WebExpert Answer. Ans. Na+ diffuses into the muscle fiber through open chemically gated ion channels. K+ diffuses out of the muscle fiber through open chemically gated ion channesl. The end plate potential is primarily, and most directly, caused by the movement o …. Focus your attention on step 5 of the Focus Figure.

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WebQuestion: Multiple Choice 15) Myoglobin a) breaks down glycogen b) is a protein involved in the direct phosphorylation of ADP c) stores oxygen in muscle cells d) produces the end plate potential 16) What is the role of tropomyosin in skeletal muscles? a) Tropomyosin is the chemical that activates the myosin heads. b) Tropomyosin serves as a contraction … WebATP is required to cause the power stroke in the myosin head. Identify the correct sequence of the following events. (a) Myosin generates a power stroke. (b) Ca+ binds to troponin. (c) ATP recharges the myosin head. (d) Troponin removes tropomyosin from G actin. (e) The sarcomere shortens. (f) Myosin binds to actin. jennifer thompson allen tate

What Is The Motor End Plate? - On Secret Hunt

End plate potentials (EPPs) are the voltages which cause depolarization of skeletal muscle fibers caused by neurotransmitters binding to the postsynaptic membrane in the neuromuscular junction. They are called "end plates" because the postsynaptic terminals of muscle fibers have a large, saucer-like appearance. When an action potential reaches the axon terminal of a motor neuron, vesicles carrying neurotransmitters (mostly acetylcholine) are exocytosed and the contents are re… WebQuizlet WebAs acetylcholine binds at the motor-end plate, this depolarization is called an end-plate potential. It then spreads along the sarcolemma, creating an action potential as voltage-dependent (voltage-gated) sodium channels adjacent to the initial depolarization site open. The action potential moves across the entire cell membrane, creating a wave ... jennifer thomas wrestling videos