Quiz on Friday

• Study guide
• Describe how sperm cell enter ovum
• describe what is a zygot
• Explain what happens during cleavage and implantation
• Be able to label/draw stages of cleavage
• describe the structures of an blastocyst
• describe when and why is hcg hormone secreted
• Describe the process of gastrulation and neurolation
• List the three primary germ layers and what structures are formed from it
• Describe what structures support an embryo (placenta, umbilical cord, amnion, chorion) label diagram
• Explain function of extraembryonic membranes, placenta and umbilical cord