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.
The presence of an enzyme called acetylcholinesterase that degrades acetylcholine is what prevents an accumulation of the neurotransmitter and sustained muscle contraction.Acetylcholinesterase is an enzyme that can be found within the neuromuscular junction.Thus, when a nerve impulse causes the release of acetylcholine at the neuromuscular junction, there is a critical time in which the neurotransmitter can bind to receptors on the muscle before it is degraded.hus, when a nerve impulse causes the release of acetylcholine at the neuromuscular junction, there is a critical time in which the neurotransmitter can bind to receptors on the muscle before it is degraded.