Obtain sample of CSF here. Synapse is the gap between neurons or neuron and effector cell. Nerve fibers are covered with a myelin sheath, which insulates the fiber and wraps many layers of its membrane around axonwhich is formed by Schwann Cells. This keeps the nerve signal in the nerve.
Trigeminal neuralgia has loss of myelin sheath in the cheek leading to intense facial pain.
Once infected with HSV, this virus is a part of the body forever. The BBB is a protective mechanism provided primarily by relatively impermeable cappilaries to the brain. Knowing about nts helps us understand some of the effects on our nervous system when chemicals called stimulants or depressants are ingested. Stimulants increase the activity of the CNS by altering the effect of nt at synapses. In contrast to stimulants, depressants often inhibit signal transmission at synapses.