Ejaculation is attained by an involuntary contraction of muscles and vessels that propel semen from the body. The identical tube which is used for ejaculation, called the urethra, is also employed for urination (peeing). [six] Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation through the sympathetic division with the https://bangkok-wax48251.blogsidea.com/41945312/facts-about-service-revealed