Angela Pace
PSY/265
November 10th, 2013
Julie Bruno
Sperm and Egg
This is a story about Zak the Sperm, and Zoie the Egg. This is an exciting day for Zak and Zoie because they are going to get fertilized today. Fertilization is the moment Zak and Zoie fuse together and a new individual begins to form. Zoie has been waiting for this day for 32 years, since her egg was produced when she was in the fetal ovaries, along with five million others, but today she is the chosen one! Zak feels like he has won the lotto because he is the only one out of 500 million mobile sperm discharged today (Rathus, Nevid, and Fichner-Rathus, 2011.), in one ejaculation that will get to fertilize.
Zak and Zoie Zak's day. Zak's life begins in the seminiferous tubules, inside the testes, where he has been maturing about two months. Before the great ejaculation he moves to the epididymis waiting for the great force that pushes him through the urethra. In the urethra he is mixed with a secretion from the prostate gland containing substances that facilitate his long journey to the female ovum, or Zoie. First, Zak the Sperm and the prostate secretion are discharged with immense force by the way of contractions of the pelvic muscles, and then they are followed by a sugar-containing fluid from the seminal vesicles (glands emptying into the vas deferens). From there he exits the penis into the vagina where his journey of fertilization begins.
Zoie's day. Zoie has had a much longer life than Zak because she was formed while still in the fetus of a human being. Her chances of becoming fertilized are about one in 500 million, even then a women's body only ovulates about 400 times altogether in a lifetime. Her time of ovulation is a dynamic process that takes place in the course of one or more minutes. The portion of the follicle facing the abdominal cavity ruptures fairly rapidly and the fluid filling the follicle and