outline the process of fertilization. include the changes that must occur in sperm to enable them to fertilise an ovum How a spermatozoa penetrate the ovum How polyspspermy is normally prevented
Added by Anita J.
Step 1
- Upon entering the female reproductive tract, sperm undergo capacitation, a process that involves changes in the sperm membrane, rendering it capable of fusing with the egg's membrane and undergoing the acrosome reaction. Show more…
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Match the process of fertilization in order of events: 1. Sperm squeezes through follicle cells around the egg to contact the jelly coat around the egg. 2. The sperm nucleus enters the cytoplasm of the egg. 3. The sperm head plasma membrane fuses with the egg plasma membrane. 4. Enzymes from the acrosome are released to break down the jelly coat around the egg.
Adi S.
Place the events of fertilization in the correct order from beginning to end: 1. The head of the sperm touches the cell surface integrins of the oocyte. 2. The acrosomal enzymes digest through the zona pellucida. 3. One sperm head penetrates the zona pellucida, entering the perivitelline space. 4. The sperm cell penetrates the plasma membrane, entering the cytoplasm. 5. The oocyte nucleus completes meiosis II, forming a polar body. 6. The oocyte pronucleus moves back toward the center of the oocyte. 7. Sperm attach and move through to the secondary oocyte. 8. The zona pellucida moves outward to form the perivitelline space. 9. Two pronuclei fuse, forming a zygote.
Describe the process of spermatogenesis. Also, in your essay, describe the structure of the sperm and the function of each structure. Lastly, describe the process of fertilization, including how polyspermy is prevented.
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