It is still unproven as to why the moth is driven to light â but the best hypothesis is that the moth navigates by lunar light. In the absence of moonlight, the moth moves to the next best thing: man-made light. Even at the risk of loosing its life, the moth is ever-vigilant in following its path of light.
The piriformis is a muscle found deep inside the buttocks. It connects the lower spine to the upper thighbone and runs directly over the sciatic nerve. If this muscle goes into spasm, it can put pressure on the sciatic nerve, triggering symptoms of sciatica. Piriformis syndrome is more common in women.t connects the lower spine to the upper thighbone and runs directly over the sciatic nerve. If this muscle goes into spasm, it can put pressure on the sciatic nerve, triggering symptoms of sciatica. Piriformis syndrome is more common in women.
Anatomy of Sciatica. The sciatic nerve runs from the lower back, down through the hips and buttocks, and along the back of the leg into the foot. It actually originates from the L4 through S3 spinal nerves. It innervates the deep muscles of the buttocks and hips.ciatica is a name given to pain caused by pressure placed on the sciatic nerve. When a nerve is placed under pressure it sends out pain signals. It may radiate down the length of the nerve or be focused in a specific area. The muscles innervated by the nerve may or may not be directly affected.