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.
Sudden onset pain on the outer side of the foot can be from a fracture of the 5th Metatarsal and injuries to this bone are a common sports injury. Causes of pain on the outside of the foot are listed here: 1  Midtarsal Joint Sprain A mid tarsal joint sprain is an injury to the ligaments holding the mid tarsal joint together causing pain in the outside middle of the foot. 2  Peroneus Brevis Tendon Injury The Peroneus Brevis tendon inserts into the 5th matatarsal bone on the outside of the foot.
Yes. It is possible that vitamin D is causing the symptoms you describe. Bone pain is a common symptom of vitamin D. Vitamin D causes me bone pain in the fourth finger on my left hand. It's hard for me to know if the pain you feel in your toes is bone pain or not. experienced no side effects for three months at 4000 IU/day. For the past 10 months Iâve been alternating between vitamin D abstinence for 1 to 2 weeks and supplementation for 1 day. Some of the time, instead of supplements, I sunbath in shorts at noon for 30 minutes to 1 hour.