The 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.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.
Find out more about the common causes, symptoms, diagnosis and treatment options for pain on outside of foot in the ankle sprain section. 3) Cuboid Syndrome Cuboid Syndrome is a less common cause of lateral foot pain (i.e. outer side of foot pain) but it frequently goes undiagnosed which can lead to symptoms being present for long periods. It is caused by one of the small foot bones, the cuboid, being partially dislocated out of position following an injury like an ankle sprain or from repetitive strain on the foot.
SCIATICA AND DISC PROLAPSE. Sciatica is a pain in the leg caused by compression and/or irritation of one of five nerve roots that are branches of the sciatic nerve. The pain is felt in the lower back, buttock, and/or various parts of the leg and foot.n addition to pain, there may be numbness, muscular weakness, and difficulty in moving or controlling the leg. Typically, the symptoms are only felt on one side of the body. Although sciatica is a relatively common form of low back pain and leg pain, the true meaning of the term often is misunderstood.