BIOL 404-Exam 4-Reproduction 18

Why are multiple sperm needed for conception?

What needs to occur in order for the cumulus oophorus and corona radiata of the egg to be dispersed?

What is the approximate time frame that the conception needs to occur?

What causes the acrosomal reaction?

What occurs when sperm contact the zona pellucida?

What is contained in the acrosome?

Describe the acrosomal reaction:

What mediates fusion?

What does Fertilin mediate?

What is the term for fertilin mediated sperm attachment to the ovum membrane?

What prevents other sperm from binding to the ovum?

What is the purpose of cortical granules are extruded from the ovum into the perivitilline space, altering the zona pellucida?

What two things does sperm fusion cause?

What is the visible sign of fertilization?

After what step in fertilization does the 2nd meiotic division occur?

What is the term for the fertilized egg?

What is a zygote?

Where are cortical granules stored in the egg?

What occurs directly after the second meiotic division?

What is the Morula?

What is the name for the ball of cells contained in the zona pellucida that develops soon after fertilization?

What causes contractions of the Fallopian tube right after ovulation?

How long is the morula retained in the fallopian tube?

Why is it important that the morula be retained in the Fallopian tube for 3-4 days?

What must happen for the morula to be delivered to the uterus?