Sperm Egg Describe life a sperm life egg start finish. Cover points story: - Trace movements sperm

Where It All Started

In order to properly chronicle the journey of a sperm and egg to fertilization, one must begin with the factors responsible for their creation. It all starts with a thought -- or, from a release from the brain. For sperms to be created, the pituitary gland (which is inside the brain) receives a hormone known as GnRH that causes it to produce the two key chemicals responsible for sperm production (Rosick 2003). The first is called follicle stimulating hormone and the second is known as lutenizing hormone.

Once these hormones are created, sperm development can actually begin in the lower portions of seminiferous tubules, which are located inside of the testicles. The lower part of these tubules are known contain sertoli cells, in which sperm creation begins. Gradually, sperms...
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