PLC Knee Injury. The Posterolateral Complex (PLC) refers to a group of ligaments and tendons that run on the outside of the knee. The PLC is composed of the fibular collateral ligament (FCL), the popliteofibular ligament (PFL), and the tendon of the popliteus muscle. Together these three structures provide stability to the knee with side to side motion and during rotational movements.
The development of the neuromuscular junction requires signaling from both the motor neuron's terminal and the muscle cell's central region. During development, muscle cells produce acetylcholine receptors (AChRs) and express them in the central regions in a process called prepatterning.he neuromuscular junction is the site of the signal exchange. The steps of this process in vertebrates occur as follows:(`) The action potential reaches the axon terminal. (2) Voltage-dependent calcium gates open, allowing calcium to enter the axon terminal.
The particular synapse made between a spinal motor neuron and skeletal muscle cell is called the motor endplate because of its specific structure. The synapse at the neuromuscular junction has three characteristic features of chemical synapses in the nervous system.First, there is a distinct separation between the presynaptic and the postsynaptic membrane.hanges in the strength of synapses endow the nervous system with the ability to store information. 4.1 Anatomy of the Neuromuscular Junction. The synapse for which most is known is the one formed between a spinal motor neuron and a skeletal muscle cell.