According to IvyRose Holistic, a neuromuscular junction consists of the axon terminal of a motor neuron and the motor end plate of a muscle fiber. An axon is the long process of a neuron. As the axon enters a muscle, it forms branches that are referred to as axon terminals. A synaptic end bulb is located at the end of each axon terminal. The end bulbs contain synaptic vesicles, which contain a neurotransmitter called acetylcholine, or ACh.
A neuromuscular junction also contains a synaptic cleft, which is the area between the sarcolemma and axon terminal. The sarcolemma is the plasma membrane sheath that forms the outer layer of a cell. The synaptic cleft is the gap between a motor neuron and the motor end plate of a muscle cell. This is a synapse.
A neuromuscular junction also contains a synaptic cleft, which is the area between the sarcolemma and axon terminal. The sarcolemma is the plasma membrane sheath that forms the outer layer of a cell. The synaptic cleft is the gap between a motor neuron and the motor end plate of a muscle cell. This is a synapse.