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.
Patient Comments Read 3 Comments Share Your Story. The most common symptom from sciatica is pain. Most people describe a deep, severe pain that starts low on one side of the back and then shoots down the buttock and the leg with certain movements. Sciatica can also cause knee pain, hip pain, and foot pain. 1  The pain is usually worse with both prolonged sitting and standing. 2  In most people, the pain is made worse by sneezing, coughing, laughing, or a hard bowel movement.  People may also notice a weakness in their leg or foot, along with the pain.