The Center for Medicare Advocacy produced this packet to help you understand Medicare coverage and how to file an appeal if appropriate. Medicare is the national health insurance program to which many people with disabilities and older people are entitled under the Social Security Act.
Sperm release pathway. Overview. The key male reproductive organs include the testes, epididymis, urethra, vas deferens, prostate gland, seminal vesicle, and penis. The testes are composed of coiled structures called seminiferous tubules, which are the sites of sperm production.
Phase 1: emission in which the vas deferens (the tubes that store and transport sperm from the testes) contract to squeeze the sperm toward the base of the penis through the prostate gland and into the urethra. The seminal vesicles release their part of the semen that combine with the sperm. The ejaculation is unstoppable at this stage. Phase 2: ejaculation in which the muscles at the base of the penis and urethra contract.