Life Cycle of the Sperm and Egg
This is a story about Spike and Edna and how they created new life. Spike is a sperm that is very excited about his day. Edna is an egg that feels like the luckiest egg ever. Spike and Edna both feel lucky because they were chosen for fertilization today. Spike and Edna are going to fertilize by combining together to create a new life. Edna has been waiting for this day since she was created in Katie’s ovaries while she was just a fetus. Edna was not the only egg created while Katie was a fetus. Edna is just one of five million other eggs but today is Edna’s lucky day. Today Edna has been chosen especially for fertilization. Spike has also been one of many to be chosen to participate in fertilization. Spike is just one of 500 million sperm that will be ejaculated today by Troy. Spike began his life in Troy’s testes in the seminiferous tubules. Spike has been growing a maturing inside of Troy’s body for two months now and he is ready to go. Spike has heard that ejaculation is the greatest roller coaster ride ever. He knows that he has to wait for this wonderful ride to begin through the urethra. Spike anxiously awaitswith the other 499 million sperm in the epididymis. The ride begins by Spike waiting in the epididymis and then he begins to move through the Vas deferens, the tube that carries all the sperm from the testes to the ejaculatory duct of the penis (Rathus, Nevid, & Fichner-Rathus, 2007, p. 113). . While he is in the urethra, Spike is covered in all kinds of secretions from the prostate gland. These secretions are going to help Spike follow through the urethraand get to the female ovum which is where Edna is. In order to get to Edna, Spike and all the secretions from the prostate are pushed through Troy’s body during ejaculation. Ejaculation is when a male ejaculates sperm and secretions from the prostate bland using contractions from Troy’s pelvic muscles. Pushing Spike along the way are also fluids from the seminal vesicles which contain sugars. Once
References: Human embryology. (2007). _Retrieved October 4, 2009, from Encyclopædia Britannica Online_ Rathus, S., Nevid, J., & Fichner-Rathus, L. (2007). Human Sexuality in a World of Deversity. , n.d. : Pearson Education, Inc.. Retrieved October 4,2009.