Psychology 2075 Chapter Notes - Chapter 6: Chorionic Villus Sampling, Fetal Alcohol Spectrum Disorder, Congenital Heart Defect
19 Apr 2013
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The egg has no way of movement and is moved by the cilia that lines the fallopian tubes. A women"s cervix secretes mucus that flushes the passage ways to prepare for the arrival of the sperm. The sperm travel great distances to reach the vagina and are made up of the head, mid piece and tail. It is approximately 60 micrometers, and the dna is found within the nucleus which is located in the head. The head also contains acrosome (a chemical reservoir) and rna. The sperm is propelled forward by the flagella this is powered by the mitochondria found within the tail. Sperm are capable of swimming 1-3 centimeters per hour. Conception occurs in the last third of the fallopian tube. The sperm is attracted to the egg by a chemical secreted by the egg, they attach to the zona pellucida.
