All-hay and alfalfa January hay price averages were slightly lower in USDAâs most recent Agricultural Prices report released last week. The all-hay price was $124 per ton, down $2 per ton from the p...
What is the role of acetylcholine in a skeletal muscle contraction? Your answer: It binds to receptors and initiates a change in ion permeability that resutls in the contraction of the muscle cell. 3. Describe the process of excitation-contraction coupling in skeletal muscle fibers. Your answer: This is the entire process of the neuromuscular juntion leading to the end-plate potential.
So letâs do a quick review of muscle contraction physiology: 1  An action potential in a motor neuron causes acetylcholine to release in the synaptic cleft. 2  Acetylcholine binds with receptors on the cell membrane on the muscle fiber, opening Ca2+ -Na+ channels. Usually referred to as Calcium channels.