Ejaculation is achieved by an involuntary contraction of muscles and vessels that propel semen from the human body. The identical tube that is definitely used for ejaculation, called the urethra, can also be employed for urination (peeing). [six] Erection subsides when parasympathetic stimulation is discontinued; baseline stimulation with the sympathetic https://judohistorytheorypractice50470.digiblogbox.com/60015032/new-step-by-step-map-for-service