Numerical modelling of tephra fallout associated with dome collapses and Vulcanian explosions: application to hazard assessment on Montserrat C. BONADONNA~, G. MACEDONIO* & R. S. J. SPARKS' Department of Earth Sciences, University of Bristol, Bristol BS8 IRJ, UK (e-mail: steve.sparks@bristol.ac.uk)
The spermatic cord block is a nerve block that works much the same way a nerve block for back pain works. Lets say you have something that is causing the pain, and the nerves tell your spine that theres pain there, Geltzeiler explains.
Sperm motility refers to the movement and swimming of sperm. Poor sperm motility means that the sperm do not swim properly, which can lead to male infertility. Poor sperm motility is also known as asthenozoospermia.