Psychology 2075 Chapter Notes - Chapter 6: Zona Pellucida, Fallopian Tube, Vas Deferens

• School: Western University
• Department: Psychology
• Course: Psychology 2075
• Professor: Corey Isaacs

Document Summary

The sperm before it enters the vagina must make its own journey. Initially manufactured in the seminiferous tubules of the testes: they are then collected and stored in the epididymis, during ejaculation, they moved up in the vas deferens and then travelled through the ejaculatory duct. As they reach, a chemical secreted by the egg attracts them: the egg is surrounded by a layer called the zona pellucida, sperm swim around the egg and secrete hyaluronidase which dissolved the zona pellucida. The fertilized egg is called the zygote: after 26 hours after conception, it begins the process of cell division, after 5-7 days, the mass of cells implants itself in the lining of the uterus. For the first two weeks of gestation the conceptus is called a zygote: then between weeks of 2 and 8 it is called an embryo, from then on, it is called a fetus.