Answer:
C-An action potential reaches the presynaptic membrane.
E-Sodium channels on the motor end plate open.
A-Sodium enters the muscle fiber, creating an end-plate potential.
B-Neurotransmitter is released into the synaptic cleft.
D-Neurotransmitter binds to a receptor on the postsynaptic membrane.
Explanation:
In the neuromuscular junction, there is a presynaptic membrane, a postsynaptic membrane, and between these two, there is a gap called the synaptic cleft.
First, an action potential reaches the presynaptic membrane, causing the opening of sodium channels and the entering of Sodium ions to the muscle fiber creating an endplate potential. As a consequence of this, the neurotransmitters contained in vesicles travel down up to the presynaptic membrane, where they release their content into the synaptic cleft. Then, the neurotransmitters bind to the receptors in the ion channels of the postsynaptic terminal. This causes the opening of the ion channels and a rush of ion Sodium to the inside of the postsynaptic membrane, creating an action potential that will travel from cell to cell.
Arranging the following events based on their mode of occurrence is at the neuromuscular junction ;
The neuromuscular junction is composed of presynaptic membrane, postsynaptic membrane and a synaptic cleft. The events that occurs at the neuromuscular joints starts with an action potential reaching the presynaptic membrane which leads to the entrance of sodium ion into muscle fibers due to the opening of the sodium channels. The neurotransmitter travels through the presynaptic membrane and empties its content into the synaptic cleft.
Hence we can conclude that Arranging the following events based on their mode of occurrence is at the neuromuscular junction is ; C , E , A , B and D
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